JPH0417193B2 - - Google Patents

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Publication number
JPH0417193B2
JPH0417193B2 JP22221584A JP22221584A JPH0417193B2 JP H0417193 B2 JPH0417193 B2 JP H0417193B2 JP 22221584 A JP22221584 A JP 22221584A JP 22221584 A JP22221584 A JP 22221584A JP H0417193 B2 JPH0417193 B2 JP H0417193B2
Authority
JP
Japan
Prior art keywords
mmol
solution
added
reduced pressure
acetoxy
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
JP22221584A
Other languages
Japanese (ja)
Other versions
JPS61100577A (en
Inventor
Tamejiro Hyama
Haruhito Ooishi
Hiroyuki Saimoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sagami Chemical Research Institute
Original Assignee
Sagami Chemical Research Institute
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sagami Chemical Research Institute filed Critical Sagami Chemical Research Institute
Priority to JP59222215A priority Critical patent/JPS61100577A/en
Publication of JPS61100577A publication Critical patent/JPS61100577A/en
Publication of JPH0417193B2 publication Critical patent/JPH0417193B2/ja
Granted legal-status Critical Current

Links

Description

【発明の詳細な説明】 本発明は一般式 (式中、R1及びR2はアルキル基またはアリー
ル基であり、R1とR2は一体となり、アルキレン
基、またはポリメチレン基を形成し得る。R3
水素原子、ハロゲン原子、低級アルキル基、アシ
ル基、アリール基、アリールチオ基、またはアリ
ールスルフイニル基である。)で表わされるアミ
ノフラノン製造方法に関する。
[Detailed Description of the Invention] The present invention relates to the general formula (In the formula, R 1 and R 2 are an alkyl group or an aryl group, and R 1 and R 2 can be taken together to form an alkylene group or a polymethylene group. R 3 is a hydrogen atom, a halogen atom, or a lower alkyl group. , an acyl group, an aryl group, an arylthio group, or an arylsulfinyl group).

本発明により得られる前記一般式()で表わ
されるアミノフラノンはイソシアナートと反応さ
せることにより、対応する尿素誘導体に導くこと
ができ、この尿素誘導体は抗高血圧作用を有する
医薬として有用であることが知られている(特開
昭52−139056号参照)ほか、植物成長遅延剤ある
いは故葉剤として有用であることが知られている
(特開昭50−148352号参照)。
By reacting the aminofuranone represented by the general formula () obtained by the present invention with an isocyanate, the corresponding urea derivative can be derived, and this urea derivative is said to be useful as a medicine having antihypertensive effects. In addition, it is known to be useful as a plant growth retardant or a leaf agent (see JP-A-50-148352).

従来、前記一般式()で表わされるアミノフ
ラノンの製造方法としてはテトロン酸誘導体にフ
エルヒドラジンを反応させた後、接触水添を行
い、N−N結合を還元する方法が知られている
(特開昭52−139056号参照)。しかしこの方法はテ
トロン酸の合成が困難であるばかりか、テトロン
酸とフエニルヒドラジンとの反応を収率よく行う
ことができず実用に供し難い。
Conventionally, as a method for producing aminofuranone represented by the above general formula (), a method is known in which a tetronic acid derivative is reacted with ferhydrazine, and then catalytic hydrogenation is performed to reduce the N-N bond (especially (Refer to Kaisho 52-139056). However, with this method, not only is it difficult to synthesize tetronic acid, but also the reaction between tetronic acid and phenylhydrazine cannot be carried out in good yield, making it difficult to put it to practical use.

本発明者らはアミノフラノンの製造方法につい
て鋭意検討した結果、効率のよい方法を見出し本
発明を完成した。
The inventors of the present invention conducted extensive studies on the method for producing aminofuranone, and as a result, discovered an efficient method and completed the present invention.

本発明は一般式 (式中、R1及びR2はアルキル基又はアリール
基であり、R1とR2は一体となり、アルキレン基
又はポリメチレン基を形成し得る。R3は水素原
子、ハロゲン原子、低級アルキル基、アシル基、
アリール基、アリールチオ基またはアリールスル
フイニル基である。)で表わされる化合物を塩基
で処理することからなる前記一般式()で表わ
されるアミノフラノンを製造するものである。
The present invention is based on the general formula (In the formula, R 1 and R 2 are an alkyl group or an aryl group, and R 1 and R 2 can be taken together to form an alkylene group or a polymethylene group. R 3 is a hydrogen atom, a halogen atom, a lower alkyl group, acyl group,
It is an aryl group, an arylthio group or an arylsulfinyl group. The aminofuranone represented by the general formula () is produced by treating the compound represented by the formula () with a base.

本発明の一般式()で表わされる化合物は(1)
ケトンをシアノヒドリンとした後、アシル化する
か、もしくは、(2)ケトンに接媒の存在下シアン化
トリメチルシリルを反応させてまずシアノヒドリ
ントリメチルシリルエーテルを得たのち(D.A.
Evans et al.,J.Org.Chem.39,914(1984)参照)
触媒の存在下無水酢酸を反応させて(B.Ganem
et al.,J.Org.Chem.,39,3728(1974)参照)容
易に製造できる化合物である。
The compound represented by the general formula () of the present invention is (1)
Either the ketone is converted into cyanohydrin and then acylated, or (2) the ketone is reacted with trimethylsilyl cyanide in the presence of a solvent to first obtain cyanohydrin trimethylsilyl ether (DA
Evans et al., J.Org.Chem. 39 , 914 (1984))
Reacting acetic anhydride in the presence of a catalyst (B.Ganem
et al., J.Org.Chem., 39 , 3728 (1974)).

前記一般式()で表わされる化合物のR3
しては水素原子、ハロゲン原子、低級アルキル
基、アシル基、アリール基、アリールチオ基また
はアリールスルフイニル基などを挙げることがで
きる。
Examples of R 3 in the compound represented by the general formula () include a hydrogen atom, a halogen atom, a lower alkyl group, an acyl group, an aryl group, an arylthio group, and an arylsulfinyl group.

又、R1,R2はアルキル基、アルキレン基また
はR1とR2が一体となつたアルキレン又はポリメ
チレン基を挙げることができる。すなわち前記一
般式()で表わされる具体的化合物としては2
−アセトキシ−2−メチルプロパンニトリル、2
−アセトキシ−2−メチルブタンニトリル、2−
アセトキシ−2,2−ペンタメチレンアセトニト
リル、2−アセトキシ−2−エチルブタンニトリ
ル、2−アセトキシ−2−メチルペンタンニトリ
ル、2−アセトキシ−2,3−ジメチルブタンニ
トリル、2−アセトキシ−2,2−ジフエニルア
セトニトリル、2−アセトキシ−2−エチル−3
−メチルブタンニトリル、2−アセトキシ−2−
メチルウンデカンニトリル、2−アセトキシ−2
−メチル−3−フエニルプロパンニトリル、2−
アセトキシ−2−ベンジル−ブタンニトリル、2
−アセトキシ−2−エチルウンデカンニトリル、
2−アセトキシ−2−メチルヘキサンニトリル、
2−アセトキシ−2,3−ジメチルペンタニトリ
ル、2−アセトキシ−2,3,3−トリメチルブ
タンニトリル、2−アセトキシ−2−メチルヘプ
タンニトリル、2−アセトキシ−2−メチルオク
タンニトリル、2−アセトキシ−2−シクロヘキ
シルプロパンニトリル、2−アセトキシ−2−メ
チルノナンニトリル、2−アセトキシ−2−フエ
ニルプロパンニトリル、2−アセトキシ−2−フ
エニルブタンニトリル、2−アセトキシ−2−
(B−ナフチル)プロパンニトリル、2−アセト
キシ−2−(6−メトキシ−2−ナフチル)プロ
パンニトリル、2−メチル−2−プロピオニルオ
キシプロパンニトリル、2,2−ペンタメチレン
−2−プロピオニルオキシアセトニトリル、2−
クロロアセトキシ−2−メチルプロパンニトリ
ル、2−ブロモアセトキシ−2−メチルプロパン
ニトリル、2−メチル−2−フエニルアセトキシ
プロパンニトリル、2−クロロアセトキシ−2,
2−ペンタメチレンアセトニトリル、2−ブロモ
アセトキシ−2,2−ペンタメチレンアセトニト
リル、2−メチル−2−(フエニルチオアセトキ
シ)プロパンニトリル、2−メチル−2−(フエ
ニルスルフイニルアセトキシ)プロパンニトリ
ル、2−(アセトアセトキシ)−2−メチルプロパ
ンニトリル、2−アセトアセトキシ−2,2−ペ
ンタメチレンアセトアセトニトリル、2−アセト
キシ−2,2−テトラメチレンアセトニトリルな
どを挙げることができる。
Further, R 1 and R 2 can be an alkyl group, an alkylene group, or an alkylene or polymethylene group in which R 1 and R 2 are combined. That is, the specific compound represented by the general formula () is 2
-acetoxy-2-methylpropanenitrile, 2
-acetoxy-2-methylbutanenitrile, 2-
Acetoxy-2,2-pentamethyleneacetonitrile, 2-acetoxy-2-ethylbutanenitrile, 2-acetoxy-2-methylpentanenitrile, 2-acetoxy-2,3-dimethylbutanenitrile, 2-acetoxy-2,2- Diphenylacetonitrile, 2-acetoxy-2-ethyl-3
-Methylbutanenitrile, 2-acetoxy-2-
Methylundecanenitrile, 2-acetoxy-2
-Methyl-3-phenylpropanenitrile, 2-
Acetoxy-2-benzyl-butanenitrile, 2
-acetoxy-2-ethylundecanenitrile,
2-acetoxy-2-methylhexanenitrile,
2-acetoxy-2,3-dimethylpentanitrile, 2-acetoxy-2,3,3-trimethylbutanenitrile, 2-acetoxy-2-methylheptanenitrile, 2-acetoxy-2-methyloctanenitrile, 2-acetoxy- 2-Cyclohexylpropanenitrile, 2-acetoxy-2-methylnonanenitrile, 2-acetoxy-2-phenylpropanenitrile, 2-acetoxy-2-phenylbutanenitrile, 2-acetoxy-2-
(B-naphthyl)propanenitrile, 2-acetoxy-2-(6-methoxy-2-naphthyl)propanenitrile, 2-methyl-2-propionyloxypropanenitrile, 2,2-pentamethylene-2-propionyloxyacetonitrile, 2-
Chloroacetoxy-2-methylpropanenitrile, 2-bromoacetoxy-2-methylpropanenitrile, 2-methyl-2-phenylacetoxypropanenitrile, 2-chloroacetoxy-2,
2-pentamethyleneacetonitrile, 2-bromoacetoxy-2,2-pentamethyleneacetonitrile, 2-methyl-2-(phenylthioacetoxy)propanenitrile, 2-methyl-2-(phenylsulfinylacetoxy)propanenitrile, Examples include 2-(acetoacetoxy)-2-methylpropanenitrile, 2-acetoacetoxy-2,2-pentamethyleneacetoacetonitrile, and 2-acetoxy-2,2-tetramethyleneacetonitrile.

本発明は前記一般式()で表わされる化合物
を塩基で処理するものであるが、使用できる塩基
としては、ジイソプロピルアミン、ヘキサメチル
ジシラザン等の第2級アミンのアルカリ金属塩又
はアルカリ士類金属塩、トリエチルアミン、ジイ
ソプロピルエチルアミン、ジエチルアニリン、ピ
リジン、2,6−ルチジン、4−ジメチルアミノ
ピリジンのような第3級アミン、アルカリ金属又
はアルカリ士類金属の水素化物およびt−ブトキ
シカリウムなどのアルコラートを例示することが
できる。
In the present invention, the compound represented by the general formula () is treated with a base, and examples of bases that can be used include alkali metal salts or alkali metal salts of secondary amines such as diisopropylamine and hexamethyldisilazane. salts, tertiary amines such as triethylamine, diisopropylethylamine, diethylaniline, pyridine, 2,6-lutidine, 4-dimethylaminopyridine, alkali metal or alkali metal hydrides and alcoholates such as potassium t-butoxy. I can give an example.

本発明を実施するには、直接反応に関与しない
テトラヒドロフラン、ジエチルエーテル、メチラ
ール、ジメトキシエタン等のエーテル系溶媒を用
いて行うことができる。
The present invention can be carried out using an ether solvent such as tetrahydrofuran, diethyl ether, methylal, dimethoxyethane, etc., which does not directly participate in the reaction.

処理温度は−80℃〜80℃の範囲において円滑に
進行する。
The treatment progresses smoothly within the range of -80°C to 80°C.

尚、塩基として水素化ナトリウムやリチウムア
ミドなどを用いた場合には反応完結後上記反応混
合物を中和剤で処理することにより目的物を単離
することができる。用いることができる中和剤と
しては塩化アンモニウム、メチルアミン塩酸塩、
ピリジン塩酸塩などの水溶液、酢酸、プロピオン
酸などのカルボン酸を挙げることができる。中和
温度は、上記環化反応の温度から室温の範囲にお
いて充分である。
In addition, when sodium hydride, lithium amide, etc. are used as a base, the target product can be isolated by treating the reaction mixture with a neutralizing agent after the reaction is completed. Neutralizing agents that can be used include ammonium chloride, methylamine hydrochloride,
Examples include aqueous solutions such as pyridine hydrochloride, and carboxylic acids such as acetic acid and propionic acid. The neutralization temperature ranges from the temperature of the cyclization reaction to room temperature.

また前記一般式()で表わされるアミノフラ
ノンのうちR3がアセチル基のものは、本発明で
使用する出発物を単離することなく、その前駆体
であるシアノヒドリンから1段階で合成すること
も可能である(実施例17)。
Furthermore, among the aminofuranones represented by the above general formula (), those in which R 3 is an acetyl group can be synthesized in one step from its precursor, cyanohydrin, without isolating the starting material used in the present invention. It is possible (Example 17).

以下、実施例および参考例により本発明を更に
詳細に説明する。
Hereinafter, the present invention will be explained in more detail with reference to Examples and Reference Examples.

参考例 1 アセトンシアノヒドリン1.7g(20mmol)をジ
クロロメタン20mlに溶解し、氷令下無水酢酸4.0
ml(70mmol)ついでピリジン3.2ml(40mmol)
を加え、室温で2日間撹拌した。反応液を3%塩
酸20mlで3回洗浄した後、飽和食塩水で1回洗浄
し、ジクロロメタン層を無水硫酸マグネシウムで
乾燥し、溶媒を減圧下に留去し、ついで減圧蒸留
により目的とする2−アセトキシ−2−メチルプ
ロパンニトリル1.28g(収率50%)を得た。
Reference example 1 Dissolve 1.7 g (20 mmol) of acetone cyanohydrin in 20 ml of dichloromethane, and add 4.0 g of acetic anhydride under ice temperature.
ml (70 mmol) then pyridine 3.2 ml (40 mmol)
was added and stirred at room temperature for 2 days. The reaction solution was washed three times with 20 ml of 3% hydrochloric acid, then once with saturated brine, the dichloromethane layer was dried over anhydrous magnesium sulfate, the solvent was distilled off under reduced pressure, and then the desired product 2 was obtained by distillation under reduced pressure. -Acetoxy-2-methylpropanenitrile 1.28g (yield 50%) was obtained.

bp.70〜75℃/9Torr.1 H−NMR(CDCl3):δ1.76(s,6H), 2.09(s,3H). IR(neat):2260,1760,1470,1420, 1390,1370,1355,1275, 1230,1190,1140cm-1. MS:m/z(相対強度),128(M++1,2), 112(4),84(7),68(56), 67(23),61(23),52(11), 44(10),43(100),42 (13),41(84),39(23), 27(11). 参考例 2 イソプロピルメチルケトン0.86g(10mmol)
を乾燥ベンゼン10.0mlに溶解し、氷令下シアン化
トリメチルシリル1.5ml(11mmol)ついで触媒量
のヨウ化亜鉛(40mg)を加え、氷温から室温に自
然昇温させて2時間撹拌した。反応液に水30mlを
加え、ベンゼン抽出し、ベンゼン層を無水硫酸マ
グネシウムで乾燥し、溶媒を減圧留去した。粗生
成物を、無水酢酸5.0mlに溶解し、触媒量の無水
塩化鉄()(40mg)を氷令下で加え、同温にて
1時間撹拌した。反応液にジクロロメタン30mlを
加え、飽和炭酸水素ナトリウム水溶液30mlで洗浄
し、ジクロロメタン層を無水硫酸マグネシウムで
乾燥後、溶媒を減圧留去して、減圧蒸留により、
目的とする2−アセトキシ−2,3−ジメチルブ
タンニトリル0.77g(収率50%)を得た。
bp.70-75°C/ 9Torr.1H -NMR ( CDCl3 ): δ1.76 (s, 6H), 2.09 (s, 3H). IR (neat): 2260, 1760, 1470, 1420, 1390, 1370, 1355, 1275, 1230, 1190, 1140cm -1 . MS: m/z (relative intensity), 128 (M + + 1, 2), 112 ( 4), 84(7), 68(56), 67(23), 61(23), 52(11), 44(10), 43(100), 42(13), 41(84), 39( 23), 27(11). Reference example 2 Isopropyl methyl ketone 0.86g (10mmol)
was dissolved in 10.0 ml of dry benzene, 1.5 ml (11 mmol) of trimethylsilyl cyanide and a catalytic amount of zinc iodide (40 mg) were added under ice temperature, and the mixture was allowed to naturally rise from ice temperature to room temperature and stirred for 2 hours. 30 ml of water was added to the reaction solution and extracted with benzene. The benzene layer was dried over anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure. The crude product was dissolved in 5.0 ml of acetic anhydride, a catalytic amount of anhydrous iron chloride (40 mg) was added under ice conditions, and the mixture was stirred at the same temperature for 1 hour. Add 30 ml of dichloromethane to the reaction solution, wash with 30 ml of saturated aqueous sodium bicarbonate solution, dry the dichloromethane layer over anhydrous magnesium sulfate, remove the solvent under reduced pressure, and distill under reduced pressure.
0.77 g (yield: 50%) of the desired 2-acetoxy-2,3-dimethylbutanenitrile was obtained.

bp 135〜140℃/26〜29Torr1 H−NMR(CDCl3):δ1.08および1.13(2d, それぞれJ=5.4Hz,6H),1.68 (s,3H),2.08(s,3H),2.08 〜2.16(m,1H). IR(neat):3000,2250,1755,1470, 1370,1235cm-. MS:m/z(相対強度),156(M++1,2), 113(29),112(5),96 (12),95(28),80(8), 71(88),70(17),69(18), 68(22),55(12),53(13), 43(100),41(46),39 (21). 参考例 3 ノニルメチルケトン0.85g(5mmol)を乾燥ベン
ゼン5.0mlに溶解し、氷令下でシアン化トリメチ
ルシリル0.8ml(6mmol)、ついで触媒量のヨウ化
亜鉛(20mg)を加え、氷温から室温へ自然昇温さ
せ一夜撹拌した。反応液に水30mlを加え、ベンゼ
ン抽出を行いベンゼン層を無水硫酸マグネシウム
で乾燥後、溶媒を減圧留去した。得られた粗生成
物を無水酢酸3.0mlに溶解し、氷令下で触媒量の
無水塩化鉄()(20mg)を加え、室温に自然昇
温させ一夜撹拌した。反応液にジクロロメタン30
mlを加え、飽和炭酸水素ナトリウム水溶液30mlで
洗浄後、無水硫酸マグネシウムで乾燥し、溶媒を
減圧留去して、減圧蒸留によつて目的とする、2
−アセトキシ−2−メチルウンデカンニトリル
0.95g(収率79%)を得た。
bp 135-140℃/26-29Torr 1 H-NMR (CDCl 3 ): δ1.08 and 1.13 (2d, respectively J = 5.4Hz, 6H), 1.68 (s, 3H), 2.08 (s, 3H), 2.08 ~2.16 (m, 1H). IR (neat): 3000, 2250, 1755, 1470, 1370, 1235cm - .MS: m/z (relative intensity), 156 (M + +1, 2), 113 (29), 112 (5), 96 (12 ), 95 (28), 80 (8), 71 (88), 70 (17), 69 (18), 68 (22), 55 (12), 53 (13), 43 (100), 41 (46 ), 39 (21). Reference example 3 0.85 g (5 mmol) of nonylmethylketone was dissolved in 5.0 ml of dry benzene, 0.8 ml (6 mmol) of trimethylsilyl cyanide was added under ice temperature, and then a catalytic amount of zinc iodide (20 mg) was added, and the mixture was allowed to rise naturally from ice temperature to room temperature. Allow to warm and stir overnight. 30 ml of water was added to the reaction solution, and benzene extraction was performed. The benzene layer was dried over anhydrous magnesium sulfate, and then the solvent was distilled off under reduced pressure. The obtained crude product was dissolved in 3.0 ml of acetic anhydride, and a catalytic amount of anhydrous iron chloride (20 mg) was added under ice conditions, and the mixture was naturally heated to room temperature and stirred overnight. Add 30% dichloromethane to the reaction solution.
ml, washed with 30 ml of saturated aqueous sodium bicarbonate solution, dried over anhydrous magnesium sulfate, distilled off the solvent under reduced pressure, and distilled under reduced pressure to obtain the desired product.
-acetoxy-2-methylundecanenitrile
0.95g (yield 79%) was obtained.

bp 88〜90℃/0.15Torr.1 H−NMR(CDCl3):δ0.82〜0.95(m,3H), 1.28(brs,14H),1.72(s, 3H),1.76〜2.03(m,2H),2.07 (s,3H). IR(neat):2925,2855,2230,1750, 1710,1460,1370, 1230cm-1. MS:m/z(相対強度),240(M++1,0.6), 197(5),196(5),180(2), 171(3),170(3),154(3), 150(6),136(8),127(2), 112(5),110(5),109 (11),95(18),86(9),83 (16),71(13),69(12), 68(12),58(14),57(13), 55(19),43(100),42(9), 41(36). 参考例 4 アセトフエノン1.2g(10mmol)を乾燥ベンゼ
ン10.0mlに溶解し、氷冷下でシアン化トリメチル
シリル1.5ml(11mmol)、ついで触媒量のヨウ化
亜鉛(20mg)を加え、氷温から室温へ自然昇温さ
せて一夜権拌した。反応液に水30mlを加え、ベン
ゼン抽出を行い、ベンゼン層を無水硫酸マグネシ
ウムで乾燥後、溶媒を減圧留去した。得られた粗
生成物を無水酢酸5.0mlに溶解し、氷冷下で触媒
量の無水塩化鉄()(100mg)を加え、氷温から
室温に戻し、一夜撹拌した。反応液にジクロロメ
タン30mlと飽和炭酸水素ナトリウム水溶液30mlと
を加え、抽出操作を行いジクロロメタン層を分取
した。有機層を無水硫酸マグネシウムで乾燥後溶
媒を減圧留去して減圧蒸留によつて目的とする、
2−アセトキシ−2−フエニルプロパンニトリル
1.7g(収率90%)を得た。
bp 88~90℃/0.15Torr. 1H -NMR ( CDCl3 ): δ0.82~0.95 (m, 3H), 1.28 (brs, 14H), 1.72 (s, 3H), 1.76~2.03 (m, 2H) ), 2.07 (s, 3H). IR (neat): 2925, 2855, 2230, 1750, 1710, 1460, 1370, 1230cm -1 .MS: m/z (relative intensity), 240 (M + +1, 0.6), 197 (5), 196 (5 ), 180 (2), 171 (3), 170 (3), 154 (3), 150 (6), 136 (8), 127 (2), 112 (5), 110 (5), 109 (11 ), 95 (18), 86 (9), 83 (16), 71 (13), 69 (12), 68 (12), 58 (14), 57 (13), 55 (19), 43 (100 ), 42(9), 41(36). Reference example 4 1.2 g (10 mmol) of acetophenone was dissolved in 10.0 ml of dry benzene, 1.5 ml (11 mmol) of trimethylsilyl cyanide was added under ice cooling, and then a catalytic amount of zinc iodide (20 mg) was added, and the temperature was naturally raised from ice temperature to room temperature. I was confused all night. 30 ml of water was added to the reaction solution and extracted with benzene. After drying the benzene layer over anhydrous magnesium sulfate, the solvent was distilled off under reduced pressure. The obtained crude product was dissolved in 5.0 ml of acetic anhydride, a catalytic amount of anhydrous iron chloride (100 mg) was added under ice cooling, the temperature was returned to room temperature from the ice temperature, and the mixture was stirred overnight. 30 ml of dichloromethane and 30 ml of a saturated aqueous sodium bicarbonate solution were added to the reaction solution, an extraction operation was performed, and the dichloromethane layer was separated. After drying the organic layer over anhydrous magnesium sulfate, the solvent is distilled off under reduced pressure, and the desired product is obtained by distillation under reduced pressure.
2-acetoxy-2-phenylpropanenitrile
1.7 g (yield 90%) was obtained.

bp 56〜58℃/0.15Torr.1 H−NMR(CDCl3):δ2.00(s,3H),2.13 (s,3H),7.33〜7.58(m,5H). IR(neat):3075,3050,3010,2950, 1790,1495,1445,1370, 1220cm-1. MS:m/z(相対強度),189(M+,1),147 (74),146(14),130(43), 105(18),103(28),77 (28),51(17),43(100). 参考例 5 2−アセチル−6−メトキシナフタレン1.0g
(5mmol)をベンゼン7.5mlに溶解し、氷冷下、シ
アン化トリメチルシリル0.74ml(5.5mmol)つい
で触媒量のヨウ化亜鉛4mgを加え氷温から室温へ
自然昇温させて3時間撹拌した。反応液にベンゼ
ン20mlと水30mlとを加えて抽出操作を行い、ベン
ゼン層を分取し無水硫酸マグネシウムで乾燥し、
ベンゼンを減圧留去した。得られる粗生成物を無
水酢酸10.6mlに溶解し、氷冷下で触媒量の無水塩
化鉄()(20mg)を加え、0℃で15分間撹拌し
た。反応液を氷冷した飽和炭酸水素ナトリウム水
溶液中にあけ、ジクロロメタン30mlで抽出した。
ジクロロメタン層を飽和食塩水で洗浄後、無水硫
酸マグネシウムで乾燥し、溶媒を減圧留去した。
得られた粗生成物をシリカゲル薄層クロマトグラ
フイー(展開溶媒 ヘキサン−酢酸エチル4:
1)で精製して目的とする、2−アセトキシ−2
−(6−メトキシナフチル)−プロパンニトリル
0.82g(収率92%)を得た。
bp 56-58°C/0.15Torr. 1 H-NMR (CDCl 3 ): δ2.00 (s, 3H), 2.13 (s, 3H), 7.33-7.58 (m, 5H). IR (neat): 3075, 3050, 3010, 2950, 1790, 1495, 1445, 1370, 1220cm -1 . MS: m/z (relative intensity), 189 (M + , 1), 147 (74), 146 ( 14), 130 (43), 105 (18), 103 (28), 77 (28), 51 (17), 43 (100). Reference example 5 2-acetyl-6-methoxynaphthalene 1.0g
(5 mmol) was dissolved in 7.5 ml of benzene, and under ice-cooling, 0.74 ml (5.5 mmol) of trimethylsilyl cyanide and a catalytic amount of 4 mg of zinc iodide were added, the temperature was allowed to rise naturally from ice temperature to room temperature, and the mixture was stirred for 3 hours. Add 20 ml of benzene and 30 ml of water to the reaction solution, perform an extraction operation, separate the benzene layer, dry it with anhydrous magnesium sulfate,
Benzene was distilled off under reduced pressure. The obtained crude product was dissolved in 10.6 ml of acetic anhydride, a catalytic amount of anhydrous iron chloride (20 mg) was added under ice cooling, and the mixture was stirred at 0°C for 15 minutes. The reaction solution was poured into an ice-cooled saturated aqueous sodium bicarbonate solution, and extracted with 30 ml of dichloromethane.
The dichloromethane layer was washed with saturated brine, dried over anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure.
The obtained crude product was subjected to silica gel thin layer chromatography (developing solvent: hexane-ethyl acetate 4:
2-acetoxy-2 purified in step 1)
-(6-methoxynaphthyl)-propanenitrile
0.82g (yield 92%) was obtained.

mp 67〜68.5℃(dec.).1 H−NMR(CDCl3):δ2.07(s,3H),2.14 (s,3H),3.92(s,3H),7.11 (s,1H),7.23(s,1H),7.42 および7.52(2d,J=1.8Hz, 1H),7.71(s,1H),7.80(s, 1H)7.96(d,J=1.5Hz,1H). IR(KBr):3120,3075,3050,3020, 2950,2855,2250,1755, 1630,1610,1510,1490, 1470,1450,1393,1380, 1350,1270,1230(sh), 1205,1085,1035,960, 890,870,810cm-1. MS:m/z(相対強度),270(M+1,5), 269(M+,29),227(25), 226(9),211(18),210 (100),167(12),166(9), 43(23). 参考例 6 ベンジルメチルケトン0.67g(5mmol)を乾燥
ベンゼン10.0mlに溶解し、氷冷下、シアン化トリ
メチルシリル0.73ml(6mmol),ついで触媒量の
ヨウ化亜鉛(20mg)を加え、氷温から室温に自然
昇温させて、一夜撹拌した。反応終了後水20mlを
加えて、ベンゼン抽出を行い、ベンゼン層を無水
硫酸マグネシウムで乾燥し、溶媒を減圧留去し
た。得られた粗生成物を無水酢酸5.0mlに溶解し、
氷冷下で触媒量の無水塩化鉄()(20mg)を加
えて室温に戻し一夜撹拌した。反応液にジクロロ
メタン30mlと飽和炭酸水素ナトリウム水溶液30ml
とを加えて抽出操作を行い、ジクロロメタン層を
分取して無水硫酸マグネシウムで乾燥後溶媒を減
圧留去し、残渣をシリカゲル薄層クロマトグラフ
イー(展開溶媒 ヘキサン−酢酸エチル10:1)
で分離して、目的とする、2−アセトキシ−2−
ベンジルプロパンニトリル0.49g(収率49%)を
得た。
mp 67-68.5℃ (dec.). 1 H-NMR (CDCl 3 ): δ2.07 (s, 3H), 2.14 (s, 3H), 3.92 (s, 3H), 7.11 (s, 1H), 7.23 (s, 1H), 7.42 and 7.52 ( 2d, J = 1.8Hz, 1H), 7.71 (s, 1H), 7.80 (s, 1H) 7.96 (d, J = 1.5Hz, 1H). IR (KBr): 3120, 3075, 3050, 3020, 2950, 2855, 2250, 1755, 1630, 1610, 1510, 1490, 1470, 1450, 1393, 1380, 1350, 1270, 1230 (sh), 1205, 1085, 1035, 960, 890, 870, 810 cm -1 . MS: m/z (relative intensity), 270 (M + 1, 5), 269 (M + , 29), 227 (25), 226 (9), 211 (18), 210 (100), 167 (12), 166 (9), 43 (23). Reference example 6 0.67 g (5 mmol) of benzyl methyl ketone was dissolved in 10.0 ml of dry benzene, and under ice cooling, 0.73 ml (6 mmol) of trimethylsilyl cyanide and a catalytic amount of zinc iodide (20 mg) were added, and the mixture was allowed to rise naturally from ice temperature to room temperature. Allow to warm and stir overnight. After the reaction was completed, 20 ml of water was added to perform benzene extraction, the benzene layer was dried over anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure. The obtained crude product was dissolved in 5.0 ml of acetic anhydride,
A catalytic amount of anhydrous iron chloride (20 mg) was added under ice cooling, and the mixture was warmed to room temperature and stirred overnight. Add 30 ml of dichloromethane and 30 ml of saturated aqueous sodium bicarbonate solution to the reaction solution.
The dichloromethane layer was separated, dried over anhydrous magnesium sulfate, the solvent was distilled off under reduced pressure, and the residue was subjected to silica gel thin layer chromatography (developing solvent: hexane-ethyl acetate 10:1).
to separate the desired 2-acetoxy-2-
0.49 g (yield 49%) of benzylpropanenitrile was obtained.

bp 140〜150℃/1〜1.5Torr. Rf値0.15〜0.24(SiO2,ヘキサン−酢酸エチル
10:1).1 H−NMR(CDCl3):δ1.68(s,3H),2.06 (s,3H),3.17および3.29 (ABquartet,J=13.5Hz, 2H),7.32(brs,5H), IR(neat):3100,3060,2970,2275, 1760,1500,1455,1375, 1265,1230,1150,1070, 1020cm-1. MS:m/z(相対強度),204(M++1,2), 143(49),116(13),115 (11),91(70),77(4),65 (10),43(100). 参考例 7 ジエチルケトン0.86g(10mmol)を乾燥ベン
ゼン10.0mlに溶解し、氷冷下でシアン化トリメチ
ルシリル1.5ml(11mmol)、ついで触媒量のヨウ
化亜鉛(20mg)を加えて、氷温から室温で一夜撹
拌した。反応液に水30mlを加えて、ベンゼン抽出
を行いベンゼン層を無水硫酸マグネシウムで乾燥
し、溶媒を減圧留去した。得られた粗生成物を無
水酢酸4.0mlに溶解し、氷冷下で触媒量の無水塩
化鉄()(100mg)を加え、氷温から室温で3時
間撹拌した。反応液にジクロロメタン30mlと飽和
炭酸水素ナトリウム水溶液30mlとを加えて抽出操
作を行い、ジクロロメタン層を分取し無水硫酸マ
グネシウムで乾燥後、溶媒を減圧留去した。残渣
より減圧蒸留によつて目的とする2−アセトキシ
−2−エチルブタンニトリル0.96g(収率62%)
を得た。
bp 140-150℃/1-1.5Torr. Rf value 0.15-0.24 (SiO 2 , hexane-ethyl acetate
10:1). 1H -NMR ( CDCl3 ): δ1.68 (s, 3H), 2.06 (s, 3H), 3.17 and 3.29 (ABquartet, J=13.5Hz, 2H), 7.32 (brs, 5H), IR (neat) : 3100, 3060, 2970, 2275, 1760, 1500, 1455, 1375, 1265, 1230, 1150, 1070, 1020cm -1 .MS: m/z (relative intensity), 204 (M + + 1, 2), 143 ( 49), 116 (13), 115 (11), 91 (70), 77 (4), 65 (10), 43 (100). Reference example 7 0.86 g (10 mmol) of diethyl ketone was dissolved in 10.0 ml of dry benzene, 1.5 ml (11 mmol) of trimethylsilyl cyanide was added under ice cooling, and then a catalytic amount of zinc iodide (20 mg) was added, and the mixture was stirred from ice temperature to room temperature overnight. did. 30 ml of water was added to the reaction solution, and benzene extraction was performed. The benzene layer was dried over anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure. The obtained crude product was dissolved in 4.0 ml of acetic anhydride, a catalytic amount of anhydrous iron chloride (100 mg) was added under ice cooling, and the mixture was stirred from ice temperature to room temperature for 3 hours. An extraction operation was performed by adding 30 ml of dichloromethane and 30 ml of a saturated aqueous sodium bicarbonate solution to the reaction solution, and the dichloromethane layer was separated, dried over anhydrous magnesium sulfate, and then the solvent was distilled off under reduced pressure. The desired 2-acetoxy-2-ethylbutanenitrile 0.96g (yield 62%) was obtained from the residue by distillation under reduced pressure.
I got it.

bp 95〜96℃/20Torr.1 H−NMR(CDCl3):δ1.05(t,J=6.9Hz, 6H),2.04(q,J=6.9Hz,4H), 2.09(s,3H). IR(neat):3000,2950,2245,1750, 1460,1370,1230cm-1. MS:m/z(相対強度)156(M)++1,5), 126(15),113(9),112 (11),96(26),95(89), 94(13),87(17),80(42), 69(28),68(61),67(67), 61(19),57(63),55(20), 54(12),53(28),52(10), 44(24),43(100),42 (17),41(47),39(34). 参考例 8 シクロヘキサノンシアノヒドリン1.88g
(15mmol)をジクロロメタン20mlに溶解し、氷
冷下で無水酢酸3.0ml(52mmol)、ついでピリジ
ン2.4ml(30mmol)を加え、0℃から室温に自然
昇温させて一夜撹拌した。反応液にジクロロメタ
ン10mlを加え、5%塩酸20mlで3回洗浄後さらに
飽和食塩水で洗浄したのち、塩化メチレン層を分
取し、無水硫酸マグネシウムで乾燥した。溶媒を
減圧留去した残渣を減圧蒸留して目的とする、2
−アセトキシ−2,2−ペンタメチレンアセトニ
トリル0.90g(収率36%)を得た。
bp 95-96℃/20Torr. 1 H-NMR (CDCl 3 ): δ1.05 (t, J=6.9Hz, 6H), 2.04 (q, J=6.9Hz, 4H), 2.09 (s, 3H). IR (neat): 3000, 2950, 2245, 1750, 1460, 1370, 1230cm -1 . MS: m/z (relative intensity) 156 (M) + +1, 5), 126 (15), 113 (9), 112 (11), 96 (26), 95 (89), 94 (13), 87 (17), 80 (42), 69 (28), 68 (61), 67 (67), 61 (19), 57 (63), 55 (20), 54 (12), 53 (28), 52 (10), 44 (24), 43 (100), 42 (17), 41 (47), 39 (34). Reference example 8 Cyclohexanone cyanohydrin 1.88g
(15 mmol) was dissolved in 20 ml of dichloromethane, and under ice-cooling, 3.0 ml (52 mmol) of acetic anhydride and then 2.4 ml (30 mmol) of pyridine were added, and the mixture was naturally heated from 0°C to room temperature and stirred overnight. 10 ml of dichloromethane was added to the reaction solution, and the mixture was washed three times with 20 ml of 5% hydrochloric acid and further washed with saturated saline, and then the methylene chloride layer was separated and dried over anhydrous magnesium sulfate. The solvent is distilled off under reduced pressure, and the residue is distilled under reduced pressure to obtain the desired product, 2
-Acetoxy-2,2-pentamethyleneacetonitrile 0.90g (yield 36%) was obtained.

bp 120℃/13Torr. mp 48.5〜49℃.1 H−NMR(CDCl3):δ1.15〜1.95(m,8E), 2.10(s,3H),2.18〜2.42(m, 2H). IR(KBr):3500,2950,2875,2250, 1750,1450,1365,1285, 1260,1230,1165,1060 cm-1. MS:m/z(相対強度),168(M++1,0.8), 124(10),108(11),107 (80),106(21),92(20), 81(23),80(39),79(16), 67(16),61(18),55(11), 54(14),53(11),43 (100),42(10),41(40), 39(22),27(17). 参考例 9 アセトンシアノヒドリン0.85g(10mmol)を
塩化メチレン10mlに溶解し氷冷下無水プロピオン
酸1.56g(12mmol)、ついでピリジン1.0ml
(12mmol)を加え、氷温から室温に自然昇温さ
せて一夜撹拌した。反応液にジクロロメタン20ml
を加え、5%塩酸30mlで3回洗浄後、飽和食塩水
で洗浄してジクロロメタン層を分取、無水硫酸マ
グネシウムで乾燥した。溶媒を減圧留去し、つい
で減圧蒸留により目的とする、2−メチル−2−
プロピオニルプロパンニトリル0.64g(収率45
%)を得た。
bp 120℃/13Torr.mp 48.5~49℃. 1H -NMR ( CDCl3 ): δ1.15-1.95 (m, 8E), 2.10 (s, 3H), 2.18-2.42 (m, 2H). IR (KBr): 3500, 2950, 2875, 2250, 1750, 1450, 1365, 1285, 1260, 1230, 1165, 1060 cm -1 .MS: m/z (relative intensity), 168 (M + +1, 0.8) , 124 (10), 108 (11), 107 (80), 106 (21), 92 (20), 81 (23), 80 (39), 79 (16), 67 (16), 61 (18) , 55 (11), 54 (14), 53 (11), 43 (100), 42 (10), 41 (40), 39 (22), 27 (17). Reference example 9 Dissolve 0.85 g (10 mmol) of acetone cyanohydrin in 10 ml of methylene chloride, add 1.56 g (12 mmol) of propionic anhydride under ice cooling, and then 1.0 ml of pyridine.
(12 mmol) was added, the temperature was naturally raised from ice temperature to room temperature, and the mixture was stirred overnight. Add 20ml of dichloromethane to the reaction solution.
The mixture was washed with 30 ml of 5% hydrochloric acid three times, and then with saturated saline, and the dichloromethane layer was separated and dried over anhydrous magnesium sulfate. The solvent is distilled off under reduced pressure, and then the desired product, 2-methyl-2-
Propionylpropanenitrile 0.64g (yield 45
%) was obtained.

bp 50℃/0.5Torr.1 H−NMR(CDCl3):δ1.15(t,J=7.5Hz, 3H),1.74(s,6H),2.34(q, J=7.5Hz,2H). IR(neat):3000,2950,2250,1775, 1470,1420,1390,1370, 1355,1225,1190,1140cm-1. MS:m/z(相対強度)142(M++1,0.3), 75(8),68(46),57(100), 43(9),41(36),29(43), 27(16). 参考例 10 アセトンシアノヒドリン0.85g(10mmol)を
塩化メチレン10mlに溶解し、氷冷下無水モノクロ
ル酢酸2.1g(12mmol)ついでピリジン1.0ml
(12mmol)を加え、氷温から室温へ自然昇温さ
せ4日間撹拌した。反応液にジクロロメタン20ml
を加え、5%塩酸30mlで3回洗浄後、飽和食塩水
30mlで1回洗浄し、さらに飽和炭酸水素ナトリウ
ム水溶液30mlで3回洗浄したのちジクロロメタン
層を分取した。
bp 50℃/0.5Torr. 1 H-NMR (CDCl 3 ): δ1.15 (t, J=7.5Hz, 3H), 1.74 (s, 6H), 2.34 (q, J=7.5Hz, 2H). IR (neat): 3000, 2950, 2250, 1775, 1470, 1420, 1390, 1370, 1355, 1225, 1190, 1140cm -1 .MS: m/z (relative intensity) 142 (M + +1, 0.3), 75 (8), 68 (46), 57 (100), 43 (9), 41 (36), 29 (43), 27 (16). Reference example 10 Dissolve 0.85 g (10 mmol) of acetone cyanohydrin in 10 ml of methylene chloride, add 2.1 g (12 mmol) of monochloroacetic anhydride under ice cooling, and then 1.0 ml of pyridine.
(12 mmol) was added, the temperature was allowed to rise naturally from ice temperature to room temperature, and the mixture was stirred for 4 days. Add 20ml of dichloromethane to the reaction solution.
After washing with 30ml of 5% hydrochloric acid three times, saturated saline solution was added.
After washing once with 30 ml and three times with 30 ml of saturated aqueous sodium bicarbonate solution, the dichloromethane layer was separated.

有機層を無水硫酸マグネシウムで乾燥して、溶
媒を減圧蒸留した残渣より減圧蒸留により、目的
とする、2−クロロアセトキシ−2−メチルプロ
パンニトリル1.3g(収率81%)を得た。
The organic layer was dried over anhydrous magnesium sulfate, and the solvent was distilled under reduced pressure. The residue was distilled under reduced pressure to obtain 1.3 g (yield: 81%) of 2-chloroacetoxy-2-methylpropanenitrile.

bp 70〜71℃/0.5 Torr.1 H−NMR(CDCl3):δ1.80(s,6H),4.04 (s,2H). IR(neat):3025,2975,2250,1770, 1750(sh),1470,1410, 1390,1370,1320,1290, 1230,1185,1135cm-1. MS:m/z(相対強度),162(M++1,0.5), 161(M+,0.2),148(0.6), 146(1.8),79(15),77(47), 68(100),23(6),21(17), 43(35),42(10),41(80), 39(12). 参考例 11 アセトンシアノヒドリン1.0g(11.7mmol)を
塩化メチレン30mlに溶解し氷冷下でフエニルチオ
アセチルクロリド2.4g(12.8mmol)、ついでト
リエチルアミン1.8ml(12.9mmol)を加え、氷温
から室温で3時間撹拌した。反応液を5%塩酸30
mlで2回、飽和食塩水30mlで1回洗浄し、さら
に、飽和炭酸水素ナトリウム水溶液30mlで洗浄し
たのち、無水硫酸マグネシウムで乾燥して、溶媒
を減圧留去した。得られた残渣から減圧蒸留によ
つて、目的とする、2−メチル−2−フエニルチ
オアセトキシプロパンニトリル1.2g(収率43%)
を得た。
bp 70-71°C/0.5 Torr. 1 H-NMR (CDCl 3 ): δ1.80 (s, 6H), 4.04 (s, 2H). IR (neat): 3025, 2975, 2250, 1770, 1750 (sh), 1470, 1410, 1390, 1370, 1320, 1290, 1230, 1185, 1135 cm -1 .MS: m/z (relative intensity), 162 ( M + +1, 0.5), 161 (M + , 0.2), 148 (0.6), 146 (1.8), 79 (15), 77 (47), 68 (100), 23 (6), 21 (17), 43 (35), 42 (10), 41 (80), 39 (12). Reference example 11 Dissolve 1.0 g (11.7 mmol) of acetone cyanohydrin in 30 ml of methylene chloride, add 2.4 g (12.8 mmol) of phenylthioacetyl chloride under ice cooling, then add 1.8 ml (12.9 mmol) of triethylamine, and stir from ice temperature to room temperature for 3 hours. did. Add the reaction solution to 5% hydrochloric acid30
ml twice, once with 30 ml of saturated brine, and further washed with 30 ml of saturated aqueous sodium bicarbonate solution, dried over anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure. From the obtained residue, the desired 2-methyl-2-phenylthioacetoxypropanenitrile (1.2 g) was obtained by distillation under reduced pressure (yield: 43%).
I got it.

bp 150〜160℃/0.7〜0.8Torr.1 H−NMR(CDCl3):δ1.65(s,6H), 3.58(s,2H),7.17〜7.47(m, 5H). IR(neat):3075,3020,2950,2340, 1740,1585,1470,1435, 1390,1370,1265,1225, 1200,1115,1025,975cm-1. MS:m/z(相対強度),237(M++2,2), 236(M++1,5),235(M+, 32),168(10),123(100), 109(13),77(12),65(10), 51(12),45(41),41(10). 参考例 12 参考例11で得られた、2−メチル−2−フエニ
ルチオアセトキシプロパンニトリル200mg
(0.85mmol)をジクロロメタン5.0mlに溶解し、
氷冷下メタクロロ過安息香酸190mg(0.88mmol,
純度80%)を加えた。氷温から室温に自然昇温さ
せ、一夜撹拌した。反応液にジクロロメタン20ml
を加え、10%チオ硫酸ナトリウム水溶液で洗浄
後、さらに飽和炭酸水素ナトリウム水溶液20mlで
3回洗浄し、有機層を無水硫酸マグネシウムで乾
燥して、溶媒を減圧留去した。得られた残渣よ
り、シリカゲル薄層クロマトグラフイー(展開溶
媒 ヘキサン−酢酸エチル1:1)によつて、目
的とする、2−メチル−2−フエニルスルフイニ
ルアセトキシプロパンニトリル165mg(収率77%)
を得た。
bp 150-160°C/0.7-0.8 Torr. 1 H-NMR (CDCl 3 ): δ1.65 (s, 6H), 3.58 (s, 2H), 7.17-7.47 (m, 5H). IR (neat): 3075, 3020, 2950, 2340, 1740, 1585, 1470, 1435, 1390, 1370, 1265, 1225, 1200, 1115, 1025, 975cm -1 .MS: m/z (relative intensity), 237 (M + + 2, 2), 236 (M + + 1, 5), 235 (M + , 32), 168 (10), 123 (100), 109 (13), 77 (12), 65 (10), 51 (12), 45 (41), 41 (10). Reference example 12 200 mg of 2-methyl-2-phenylthioacetoxypropanenitrile obtained in Reference Example 11
(0.85 mmol) in dichloromethane 5.0 ml,
Metachloroperbenzoic acid 190mg (0.88mmol,
(purity 80%) was added. The temperature was allowed to rise naturally from ice temperature to room temperature, and the mixture was stirred overnight. Add 20ml of dichloromethane to the reaction solution.
was added, washed with a 10% aqueous sodium thiosulfate solution, and further washed three times with 20 ml of a saturated aqueous sodium bicarbonate solution, the organic layer was dried over anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure. The obtained residue was subjected to silica gel thin layer chromatography (developing solvent: hexane-ethyl acetate 1:1) to obtain the desired 2-methyl-2-phenylsulfinyl acetoxypropanenitrile (165 mg, yield 77%). )
I got it.

Rf値0.20〜0.30 (SiO2,ヘキサン−酢酸エチル
1:1)1 H−NMR(CDCl3):δ1.65(s,3H),1.71 (s,3H),3.81および3.71 (ABquartet,J=13.5Hz, 2H),7.45〜7.80(m,5H). IR(neat):3500,3075,3010,2950, 2350,1745,1475,1445, 1390,1370,1270,1230, 1200,1150,1115,1090, 1050,975cm-1. MS:m/z(相対強度),253(M++2,1), 252(M++1,3),251(M+,20) 184(2),167(3),126(13), 125(100),97(22),77 (27),51(20),41(11). 参考例 13 アセトンシアノヒドリン0.85g(10mmol)を
ジクロロメタン20mlに溶解し氷冷下、塩化フエニ
ルアセチル1.8g(11.7mmol)、ついでトリエチ
ルアミン1.6ml(11.5mmol)を加えた。室温に自
然昇温させて同温度で一夜撹拌した後、反応液を
氷冷した飽和炭酸水素ナトリウム水溶液30ml中に
開け、ジクロロメタン抽出した。有機層を無水硫
酸ナトリウムで乾燥後、溶媒を減圧留去して得ら
れた残渣より、減圧蒸留して、目的とする、2−
メチル−2−フエニルアセトキシプロパンニトリ
ル0.64g(収率32%)を得た。
Rf value 0.20-0.30 (SiO 2 , hexane-ethyl acetate 1:1) 1 H-NMR (CDCl 3 ): δ1.65 (s, 3H), 1.71 (s, 3H), 3.81 and 3.71 (ABquartet, J= 13.5Hz, 2H), 7.45-7.80 (m, 5H). IR (neat): 3500, 3075, 3010, 2950, 2350, 1745, 1475, 1445, 1390, 1370, 1270, 1230, 1200, 1150, 1115, 1090, 1050, 975 cm -1 .MS: m/z (relative strength), 253 (M + + 2, 1), 252 (M + + 1, 3), 251 (M + , 20) 184 (2), 167 (3), 126 (13), 125 (100), 97 ( 22), 77 (27), 51 (20), 41 (11). Reference example 13 0.85 g (10 mmol) of acetone cyanohydrin was dissolved in 20 ml of dichloromethane, and under ice cooling, 1.8 g (11.7 mmol) of phenylacetyl chloride and then 1.6 ml (11.5 mmol) of triethylamine were added. After allowing the temperature to rise naturally to room temperature and stirring at the same temperature overnight, the reaction solution was poured into 30 ml of ice-cooled saturated aqueous sodium hydrogen carbonate solution, and extracted with dichloromethane. After drying the organic layer over anhydrous sodium sulfate, the solvent was distilled off under reduced pressure, and the resulting residue was distilled under reduced pressure to obtain the desired 2-
0.64 g (yield 32%) of methyl-2-phenylacetoxypropanenitrile was obtained.

bp 145〜150℃/0.8Torr.1 H−NMR(CDCl3):δ1.40(s,6H),3.62 (s,2H),7.28(broads,5H). IR(neat):3075,3050,3010,2950, 2325,1750,1605,1500, 1470,1455,1390,1370, 1350,1255,1225,1125, 970,730,700cm-1. MS:m/z(相対強度),204(M++1,2), 203(M+,14),119(4), 92(9),91(100),65(10), 41(9),39(7). 参考例 14 アセトンシアノヒドリン0.85g(10mmol)を
ジクロロメタン20mlに溶解し、ジケテン1.0g
(12mmol)、ついでピリジン0.94g(12mmol)
を氷冷下で加え、室温で一夜撹拌した。反応液を
氷冷した5%塩酸30ml中にあけ、ジクロロメタン
抽出した。有機層を飽和食塩水で洗浄したのち、
無水硫酸マグネシウムで乾燥して、溶媒を減圧留
去した。残渣より減圧蒸留によつて目的とする、
2−アセトアセトキシ−2−メチルプロパンニト
リル1.52g(収率90%)を得た。
bp 145-150°C/0.8 Torr. 1 H-NMR (CDCl 3 ): δ1.40 (s, 6H), 3.62 (s, 2H), 7.28 (broads, 5H). IR (neat): 3075, 3050, 3010, 2950, 2325, 1750, 1605, 1500, 1470, 1455, 1390, 1370, 1350, 1255, 1225, 1125, 970, 730, 700cm -1 .MS: m/z (relative intensity), 204 (M + + 1, 2), 203 (M + , 14), 119 (4), 92 (9), 91 (100), 65 (10), 41 (9), 39 (7 ). Reference example 14 Dissolve 0.85 g (10 mmol) of acetone cyanohydrin in 20 ml of dichloromethane, and dissolve 1.0 g of diketene.
(12 mmol), then 0.94 g (12 mmol) of pyridine
was added under ice-cooling, and the mixture was stirred at room temperature overnight. The reaction solution was poured into 30 ml of ice-cooled 5% hydrochloric acid, and extracted with dichloromethane. After washing the organic layer with saturated saline,
It was dried over anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure. The desired product is obtained from the residue by distillation under reduced pressure.
1.52 g (yield 90%) of 2-acetoacetoxy-2-methylpropanenitrile was obtained.

bp 155〜160℃/21Torr.1 H−NMR(CDCl3):δ1.78(s,6H),2.26 (s,3H),3.48(s,2H). IR(neat):3015,2950,2250,1760, 1725,1630,1560,1470, 1410,1370,1365,1320, 1260,1230,1135,1025, 995,970cm-1. MS:m/z(相対強度),168(M+−1,3), 126(2),100(2),85(12), 84(14),70(75),69(15), 68(10),58(6),44(12), 43(100),42(18),41 (16). 実施例 1 テトラヒドロフラン3.0mlに、氷冷下でヘキサ
メチルジシラザン0.70ml(3.3mmol)、ついでブ
チルリチウム(1.77M THF溶液)1.4mlを加え、
0℃で30分間撹拌した。この溶液中に、参考例1
で得られた、2−アセトキシ−2−メチルプロパ
ンニトリル127mg(1.0mmol)のテトラヒドロフ
ラン3.0ml溶液を−78℃でゆつくりと滴下した。−
76℃で2時間撹拌したのち、飽和塩化アンモニウ
ム水溶液1.0mlを加えて反応を停止させた。反応
混合物より、低沸点物質を減圧留去し、残渣をシ
リカゲル薄層クロマトグラフイー(展開溶媒 ジ
クロロメタン−メタノール10:1)によつて分離
精製して目的とする、4−アミノ−5,5−ジメ
チル−2(5H)フラノンの白色結晶104mg(収率
82%)を得た。
bp 155-160°C/21 Torr. 1 H-NMR (CDCl 3 ): δ1.78 (s, 6H), 2.26 (s, 3H), 3.48 (s, 2H). IR (neat): 3015, 2950, 2250, 1760, 1725, 1630, 1560, 1470, 1410, 1370, 1365, 1320, 1260, 1230, 1135, 1025, 995, 970cm -1 .MS: m/z (relative strength), 168 (M + -1, 3), 126 (2), 100 (2), 85 (12), 84 (14), 70 (75), 69 (15), 68 (10), 58 ( 6), 44 (12), 43 (100), 42 (18), 41 (16). Example 1 To 3.0 ml of tetrahydrofuran, add 0.70 ml (3.3 mmol) of hexamethyldisilazane and then 1.4 ml of butyllithium (1.77M THF solution) under ice cooling.
Stirred at 0°C for 30 minutes. In this solution, Reference Example 1
A solution of 127 mg (1.0 mmol) of 2-acetoxy-2-methylpropanenitrile obtained in 3.0 ml of tetrahydrofuran was slowly added dropwise at -78°C. −
After stirring at 76°C for 2 hours, 1.0 ml of saturated ammonium chloride aqueous solution was added to stop the reaction. From the reaction mixture, low-boiling substances were distilled off under reduced pressure, and the residue was separated and purified by silica gel thin layer chromatography (developing solvent: dichloromethane-methanol 10:1) to obtain the desired 4-amino-5,5- 104 mg of white crystals of dimethyl-2(5H) furanone (yield
82%).

mp 205〜207℃.1 H−NMR(CDCl3−DMSO−d61:1):δ1.48
(s,6H),4.48(s,1H), 6.57(br s,2H). IR(KBr):3400,3350(sh),3220, 3000,1720,1680,1660, 1615,1600cm-1. MS:m/z(相対強度),128(M++1,6), 127(M+,53),112(100), 70(42),66(11),59(12), 43(77). C6H9NO2に対する計算値:C,56.68;H,
7.13; N,11.02%. 実測値:C,56.55;H,7.14;N,10・90% 実施例 2 テトラヒドロフラン3.0mlに−78℃でジイソプ
ロピルアミン0.08ml(5.7×10-4mol)、ついでブ
チルリチウム(1.78M THF溶液)0.3mlを加え、
−78℃で30分間撹拌した。この溶液中に、参考例
1で得られた2−アセトキシ−2−メチルプロパ
ンニトリル50mg(0.44mmol)テトラヒドロフラ
ン1.0ml溶液を−78℃でゆつくりと滴下し、滴下
終了後さらに、−78℃で3時間撹拌した。反応液
に飽和塩化アンモニウム水溶液1.0mlを加えて反
応を停止させた後、低沸点物質を減圧留去して得
られた残渣をシリカゲル薄層クロマトグラフイー
(展開溶媒 ジクロロメタン−メタノール10:1)
で精製して、目的とする、4−アミノ−5,5−
ジメチル−2(5H)−フラノンの白色結晶30mg
(収率60%)を得た。このものは実施例1で得ら
れたものと同一のスペクトルデーターを示した。
mp 205-207℃. 1H -NMR ( CDCl3 -DMSO- d6 1:1): δ1.48
(s, 6H), 4.48 (s, 1H), 6.57 (br s, 2H). IR (KBr): 3400, 3350 (sh), 3220, 3000, 1720, 1680, 1660, 1615, 1600cm -1 . MS: m/z (relative intensity), 128 (M + +1, 6), 127 (M + , 53), 112 (100), 70 (42), 66 (11), 59 (12), 43 (77). Calculated value for C 6 H 9 NO 2 : C, 56.68; H,
7.13; N, 11.02%. Actual value: C, 56.55; H, 7.14; N, 10.90% Example 2 Add 0.08 ml (5.7 x 10 -4 mol) of diisopropylamine and then 0.3 ml of butyllithium (1.78 M THF solution) to 3.0 ml of tetrahydrofuran at -78°C.
Stirred at -78°C for 30 minutes. Into this solution, a solution of 50 mg (0.44 mmol) of 2-acetoxy-2-methylpropanenitrile obtained in Reference Example 1 in 1.0 ml of tetrahydrofuran was slowly added dropwise at -78°C, and after the dropwise addition was completed, the solution was further heated at -78°C. Stirred for 3 hours. After terminating the reaction by adding 1.0 ml of saturated ammonium chloride aqueous solution to the reaction solution, low-boiling substances were distilled off under reduced pressure, and the resulting residue was subjected to silica gel thin layer chromatography (developing solvent: dichloromethane-methanol 10:1).
to obtain the desired 4-amino-5,5-
30 mg of white crystals of dimethyl-2(5H)-furanone
(yield 60%). This showed the same spectral data as that obtained in Example 1.

実施例 3 テトラヒドロフラン5.0ml中に氷冷下臭化エチ
ルマグネシウム0.18ml(3MEt2O溶液)、ついでジ
イソプロピルアミン0.15ml(1mmol)を加えて同
温度で1.5時間撹拌した。この溶液中に、2−ア
セトキシ−2−メチルプロパンニトリル50mg
(0.4mmol)のテトラヒドロフラン1.0ml溶液を−
78℃でゆつくりと滴下した後、さらに−78〜−72
℃で4時間撹拌した。反応液に飽和塩化アンモニ
ウム水溶液1.0mlを加えて反応を停止させた後、
低沸点物を減圧留去して得られた残渣をシリカゲ
ル薄層クロマトグラフイー(展開溶媒 ジクロロ
メタン−メタノール10:1)によつて分離精製し
て白色結晶12mgを得た。このものは、実施例1で
得られたものと同一のスペクトルデーターを示し
た。収率24%。
Example 3 0.18 ml of ethylmagnesium bromide (3MEt 2 O solution) and then 0.15 ml (1 mmol) of diisopropylamine were added to 5.0 ml of tetrahydrofuran under ice cooling, and the mixture was stirred at the same temperature for 1.5 hours. In this solution, add 50 mg of 2-acetoxy-2-methylpropanenitrile.
(0.4 mmol) in 1.0 ml of tetrahydrofuran solution -
After slowly dripping at 78℃, further -78 to -72
Stirred at ℃ for 4 hours. After adding 1.0 ml of saturated ammonium chloride aqueous solution to the reaction solution to stop the reaction,
The residue obtained by distilling off low-boiling substances under reduced pressure was separated and purified by silica gel thin layer chromatography (developing solvent: dichloromethane-methanol 10:1) to obtain 12 mg of white crystals. This showed the same spectral data as that obtained in Example 1. Yield 24%.

実施例 4 テトラヒドロフラン3.0mlに、氷冷下でヘキサ
メチルジシラザン0.7ml(3.3mmol)、ついでブチ
ルリチウム(1.7M THF溶液)1.4mlを加え、5
℃から10℃で1時間撹拌した。この溶液中に、参
考例2で得られた、2−アセトキシ−2,3−ジ
メチルブタンニトリル155mg(1.0mmol)のテト
ラヒドロフラン3.0ml溶液を−76℃でゆつくりと
滴下した。−76℃で3時間撹拌したのち、飽和塩
化アンモニウム水溶液3.0mlで反応を停止させた。
反応混合物より、低沸点物を減圧留去して得られ
た残渣より、シリカゲル薄層クロマトグラフイー
(展開溶媒 ジクロロメタン−メタノール10:1)
で分離精製を行い、目的とする4−アミノ−5−
イソプロピル−5−メチル−2(5H)−フラノン
の白色結晶96mg(収率62%)を得た。
Example 4 To 3.0 ml of tetrahydrofuran, add 0.7 ml (3.3 mmol) of hexamethyldisilazane and then 1.4 ml of butyllithium (1.7 M THF solution) under ice cooling.
The mixture was stirred at 10°C to 10°C for 1 hour. A solution of 155 mg (1.0 mmol) of 2-acetoxy-2,3-dimethylbutanenitrile in 3.0 ml of tetrahydrofuran obtained in Reference Example 2 was slowly added dropwise into this solution at -76°C. After stirring at -76°C for 3 hours, the reaction was stopped with 3.0 ml of saturated ammonium chloride aqueous solution.
The residue obtained by distilling off low-boiling substances from the reaction mixture under reduced pressure was subjected to silica gel thin layer chromatography (developing solvent: dichloromethane-methanol 10:1).
The target 4-amino-5-
96 mg (yield 62%) of white crystals of isopropyl-5-methyl-2(5H)-furanone was obtained.

mp 171〜172℃1 H−NMR(CDCl3−DMSO−d610:1):δ0・82
および1.05(2d,J=6.6 Hz,6H),1.42(s,3H),1.89 および1.90(2q,J=6.6Hz,1 H),4.54(s,1H),6.23( br,s,2H). IR(KBr):3380,3205,3000,1730 (sh),1700,1665,1610, 1590,1580,1415,1290, 1230cm-1. MS:m/z(相対強度),156(M++1,2), 155(M+,8),113(11), 112(100),70(23),43(35),41(12). C8H13NO2に対する計算量:C,61.91; H,8.44;N.9.03%. 実測値:C,61.90;H,8.56;N,8.97%. 実施例 5 テトラヒドロフラン3.0mlにリチウムビス(ト
リメチルシリル)アミドのテトラヒドロフラン溶
液(1M溶液)1.0mlを−76℃で加え、ついで参考
例3で得られた2−アセトキシ−2−メチル−ウ
ンデカンニトリル100mg(0.42mmol)のテトラヒ
ドロフラン3.0ml溶液をゆつくりと滴下した。−76
℃から−70℃で5時間撹拌した後、飽和塩化アン
モニウム水溶液2.0mlを加えて反応を停止させた。
反応混合物より低沸点物質を減圧留去して得られ
る残渣より、シリカゲル薄層クロマトグラフイー
(展開溶媒 ジクロロメタン−メタノール10:1)
で分離精製して、目的とする4−アミノ−5−メ
チル−5−n−ノニル−2−(5H)−フラノンの
白色結晶63mg(収率63%)を得た。
mp 171-172℃ 1 H-NMR (CDCl 3 -DMSO-d 6 10:1): δ0・82
and 1.05 (2d, J=6.6 Hz, 6H), 1.42 (s, 3H), 1.89 and 1.90 (2q, J=6.6Hz, 1H), 4.54 (s, 1H), 6.23 (br, s, 2H) .. IR (KBr): 3380, 3205, 3000, 1730 (sh), 1700, 1665, 1610, 1590, 1580, 1415, 1290, 1230cm -1 . MS: m/z (relative intensity), 156 (M + +1, 2), 155 (M + , 8), 113 (11), 112 (100), 70 (23), 43 (35), 41 (12). Calculated amount for C 8 H 13 NO 2 : C, 61.91; H, 8.44; N. 9.03%. Actual values: C, 61.90; H, 8.56; N, 8.97%. Example 5 1.0 ml of a tetrahydrofuran solution (1M solution) of lithium bis(trimethylsilyl)amide was added to 3.0 ml of tetrahydrofuran at -76°C, and then 100 mg (0.42 mmol) of 2-acetoxy-2-methyl-undecanenitrile obtained in Reference Example 3 was added. A 3.0 ml solution of tetrahydrofuran was slowly added dropwise. −76
After stirring at -70°C for 5 hours, 2.0 ml of saturated ammonium chloride aqueous solution was added to stop the reaction.
Silica gel thin layer chromatography (developing solvent: dichloromethane-methanol 10:1) was performed on the residue obtained by distilling off low-boiling substances from the reaction mixture under reduced pressure.
The product was separated and purified to obtain 63 mg (yield: 63%) of the desired white crystals of 4-amino-5-methyl-5-n-nonyl-2-(5H)-furanone.

mp 104〜107℃.1 H−NMR(CDCl3−DMSO−d620:1):δ 0.87(t,J=6.0Hz,3H),1.24 (broads,14H),1.44(s, 3H),1.67(m,2H),4.65(s, 1H),5.58(brs,2H), IR(KBr):3440,3350,3225,2925, 2870,1735,1710,1660, 1585cm-1. MS:m/z(相対強度),240(M++1,3), 239(M+,5),211(6),154 (11),140(12),127(21), 113(59),112(100),85 (24),70(29),43(44). C14H25NO2に対する計算値:C,70.25; H,10.53;N,5.85%. 実測値:C,70.05;H,10.19;N,5.81%. 実施例 6 テトラヒドロフラン3.0mlに−76℃で、リチウ
ムビス(トリメチルシリル)アミドのテトラヒド
ロフラン溶液(1.0M溶液)2.4ml、ついで参考例
4で得られた2−アセトキシ−2−フエニルプロ
パンニトリル189mg(10mmol)のテトラヒドロ
フラン3.0ml溶液をゆつくりと滴下した。−76℃で
3時間撹拌した後、飽和塩化アンモニウム水溶液
3.0mlを加えて反応を停止させた。反応混合物よ
り低沸点物質を減圧留去して得られた残渣をシリ
カゲル薄層クロマトグラフイー(展開溶媒 ジク
ロロメタン−メタノール10:1)で分離精製し
て、目的とする4−アミノ−5−メチル−5−フ
エニル−2(5H)−フラノンの白色結晶164mg(収
率87%)を得た。
mp 104-107℃. 1 H-NMR (CDCl 3 -DMSO-d 6 20:1): δ 0.87 (t, J = 6.0Hz, 3H), 1.24 (broads, 14H), 1.44 (s, 3H), 1.67 (m, 2H) , 4.65 (s, 1H), 5.58 (brs, 2H), IR (KBr): 3440, 3350, 3225, 2925, 2870, 1735, 1710, 1660, 1585cm -1 .MS: m/z (relative intensity), 240 (M + + 1, 3), 239 (M + , 5), 211 (6), 154 (11), 140 (12), 127 (21), 113 (59), 112 (100), 85 (24 ), 70(29), 43(44). Calculated values for C14H25NO2 : C, 70.25; H, 10.53; N, 5.85%. Actual value: C, 70.05; H, 10.19; N, 5.81%. Example 6 Add 2.4 ml of a tetrahydrofuran solution (1.0 M solution) of lithium bis(trimethylsilyl)amide to 3.0 ml of tetrahydrofuran at -76°C, then add 189 mg (10 mmol) of 2-acetoxy-2-phenylpropanenitrile obtained in Reference Example 4 to tetrahydrofuran. 3.0ml solution was slowly added dropwise. After stirring at -76℃ for 3 hours, saturated ammonium chloride aqueous solution
The reaction was stopped by adding 3.0 ml. The residue obtained by distilling off low-boiling substances from the reaction mixture under reduced pressure is separated and purified using silica gel thin layer chromatography (developing solvent: dichloromethane-methanol 10:1) to obtain the desired 4-amino-5-methyl- 164 mg (yield: 87%) of white crystals of 5-phenyl-2(5H)-furanone was obtained.

mp 69〜71℃.1 H−NMR(CDCl3−DMSO−d610:1)δ 1.90(s,3H),4.68(s,1H), 6.31(br s,2H),7.30〜7.48 (m,5H). IR(KBr):3400,3205,1700,1665( se),1590〜1580(broad), 1445,1405,1290,1285, 1230,1075,965cm-1. MS:m/z(相対強度),191(M++2,1), 190(M++1,11),189(M+, 83),175(13),174(100), 146(22),121(33),112 (30),105(67),103(20), 77(38),70(14),69(17), 68(14),51(20),43(72), 41(42), C11H11NO2・0.5H2Oに対する計算値: C,66.65;H,6.10;N,7.07%. 実測値:C,66.54;H,6.24;N.6.99%. 実施例 7 テトラヒドロフラン3.0mlに−76℃でリチウム
ビス(トリメチルシリル)アミドのテトラヒドロ
フラン溶液(1.0M溶液)0.9ml(0.9mmol)つい
で参考例5で得られた、2−アセトキシ−2−
(6−メトキシ−2−ナフチル)プロパンニトリ
ル100mg(0.37mmol)テトラヒドロフラン2.0ml
溶液をゆつくりと滴下した。−76℃で3時間撹拌
した後、飽和塩化アンモニウム水溶液2.0mlを加
えて反応を停止させた。反応混合物より、低沸点
物質を減圧留去して得られた残渣をシリカゲル薄
層クロマトグラフイー(展開溶媒 ジクロロメタ
ン−メタノール10:1)で分離精製して、目的と
する、4−アミノ−5−メチル−5−(6−メト
キシ−2−ナフチル)−2(5H)−フラノンの白色
結晶95mg(収率95%)を得た。
mp 69-71℃. 1 H-NMR (CDCl 3 -DMSO-d 6 10:1) δ 1.90 (s, 3H), 4.68 (s, 1H), 6.31 (br s, 2H), 7.30-7.48 (m, 5H). IR (KBr): 3400, 3205, 1700, 1665 (se), 1590-1580 (broad), 1445, 1405, 1290, 1285, 1230, 1075, 965 cm -1 . MS: m/z (relative intensity), 191 (M + + 2, 1), 190 (M + + 1, 11), 189 (M + , 83), 175 (13), 174 (100), 146 (22), 121 (33), 112 (30), 105 (67), 103 (20), 77 (38), 70 (14), 69 (17), 68 (14), 51 (20), 43 (72), 41 (42), C 11 H 11 NO Calculated values for 2.0.5H 2 O: C, 66.65; H, 6.10 ; N, 7.07%. Actual value: C, 66.54; H, 6.24; N.6.99%. Example 7 0.9 ml (0.9 mmol) of a tetrahydrofuran solution (1.0 M solution) of lithium bis(trimethylsilyl)amide was added to 3.0 ml of tetrahydrofuran at -76°C, and then 2-acetoxy-2- obtained in Reference Example 5 was added.
(6-Methoxy-2-naphthyl)propanenitrile 100mg (0.37mmol) Tetrahydrofuran 2.0ml
The solution was slowly added dropwise. After stirring at -76°C for 3 hours, 2.0 ml of saturated ammonium chloride aqueous solution was added to stop the reaction. The residue obtained by distilling off low-boiling substances from the reaction mixture under reduced pressure is separated and purified using silica gel thin layer chromatography (developing solvent: dichloromethane-methanol 10:1) to obtain the desired 4-amino-5- 95 mg (yield 95%) of white crystals of methyl-5-(6-methoxy-2-naphthyl)-2(5H)-furanone was obtained.

mp 206〜208℃.1 H−NMR(CDCl3−DMSO−d64:1)δ 1.97(s,3H),3.90(s,3H),4.73(s,
1H),6.25(br s,2H),7.13(m,2H),
7.50(m,1H),7.68(s,1H),7.67(d,J
=2.1Hz,1H),7.86(d,J= 2.1Hz,1H). IR(KBr):3450,3350,3240,1730(sh),1725,
1645,1595,1440,1390,1370,1270,
1220,1200,1165,1140,1020,950cm-1. MS:m/z(相対強度),271(M++2,2),
270(M++1,15),269(M+,79),255(18),
254(100),226(10),201(10),185(40),157
(18). C16H15NO3・0.25H2Oとしての計算値: C,70.19;H,5.71;N,5.12% 実測値:C,70.26;H,5.51;N,5.03% 実施例 8 テトラヒドロフラン3.0mlに−76℃でリチウム
ビス(トリメチルシリル)アミド(1.0M THF
溶液)1.3ml(1.3mmol)について参考例6で得
られた2−アセトキシ−2−ベンジルプロパンニ
トリル118mg(0.6mmol)のテトラヒドロフラン
溶液3.0mlをゆつくりと滴下した。−76℃で2時間
撹拌した後、飽和塩化アンモニウム水溶液2.0ml
を加えて反応を停止させ、低沸点物質を減圧留去
した。得られた残渣よりシリカゲル薄層クロマト
グラフイー(展開溶媒 ジクロロメタン−メタノ
ール10:1)で分離精製して目的とする、4−ア
ミノ−5−ベンジル−5−メチル−2(5H)−フ
ラノンの白色結晶112mg(収率95%)を得た。
mp 206-208℃. 1 H-NMR (CDCl 3 -DMSO-d 6 4:1) δ 1.97 (s, 3H), 3.90 (s, 3H), 4.73 (s,
1H), 6.25 (br s, 2H), 7.13 (m, 2H),
7.50 (m, 1H), 7.68 (s, 1H), 7.67 (d, J
= 2.1Hz, 1H), 7.86 (d, J = 2.1Hz, 1H). IR (KBr): 3450, 3350, 3240, 1730 (sh), 1725,
1645, 1595, 1440, 1390, 1370, 1270,
1220, 1200, 1165, 1140, 1020, 950cm -1 .MS: m/z (relative intensity), 271 (M + +2, 2),
270 (M + +1, 15), 269 (M + , 79), 255 (18),
254 (100), 226 (10), 201 (10), 185 (40), 157
(18). Calculated value as C16H15NO3 0.25H2O : C, 70.19; H, 5.71; N, 5.12 % Actual value: C, 70.26; H, 5.51; N, 5.03% Example 8 Lithium bis(trimethylsilyl)amide (1.0M THF) in 3.0 ml of tetrahydrofuran at −76 °C.
3.0 ml of a solution of 118 mg (0.6 mmol) of 2-acetoxy-2-benzylpropanenitrile obtained in Reference Example 6 in tetrahydrofuran was slowly added dropwise to 1.3 ml (1.3 mmol) of the solution. After stirring at -76℃ for 2 hours, 2.0ml of saturated ammonium chloride aqueous solution
was added to stop the reaction, and low-boiling substances were distilled off under reduced pressure. The resulting residue was separated and purified by silica gel thin layer chromatography (developing solvent: dichloromethane-methanol 10:1) to obtain the desired white 4-amino-5-benzyl-5-methyl-2(5H)-furanone. 112 mg of crystals (yield 95%) were obtained.

mp158〜161℃.1 H−NMR(CDCl3−DMSO−d610:1):δ 1.50(s,3H),3.37(s,2H),4.43(s,
1H),6.15(br,s,2H),7.20(broads,
5H). IR(KBr):3420,3225,1715,1700,1660〜
1650(broad),1605,1590,1450,1415,
1300,1255,1170,970cm-1. MS:m/z(相対強度),203(M+,6),112
(100),91(7),84(33),70(15),66(40),
43(19) C12H13NO2としての計算値:C,70.92; H,6.45;N,6.89%. 実測値:C,0.75;H,6.36;N,6.76%. 実施例 9 テトラヒドロフラン3.0mlに、氷冷下ヘキサメ
チルジシラザン0.7ml(3.3mmol)、ついでブチル
リチウム(1.78M THF溶液)1.4mlを加え、5℃
から10℃で1時間撹拌した。この溶液中に、参考
例7で得られた2−アセトキシ−2−エチルブタ
ンニトリル155mg(1.0mmol)のテトラヒドロフ
ラン3.0ml溶液を、−76℃でゆつくりと滴下した。
−76℃で時間撹拌した後、飽和塩化アンモニウム
水溶液2.0mlを加えて反応を停止させた。反応混
合物より低沸点物質を減圧留去し、残渣をシリカ
ゲル薄層クロマトグラフイー(展開溶媒 ジクロ
ロメタンーメタノール10:1)で分離精製して、
目的とする4−アミノ−5,5−ジエチル−2
(5H)−フラノンの白色結晶94mg(収率61%)を
得た。
mp158-161℃. 1 H-NMR (CDCl 3 -DMSO-d 6 10:1): δ 1.50 (s, 3H), 3.37 (s, 2H), 4.43 (s,
1H), 6.15 (br, s, 2H), 7.20 (broads,
5H). IR (KBr): 3420, 3225, 1715, 1700, 1660~
1650 (broad), 1605, 1590, 1450, 1415,
1300, 1255, 1170, 970cm -1 .MS: m/z (relative intensity), 203 (M + , 6), 112
(100), 91 (7), 84 (33), 70 (15), 66 (40),
43(19) Calcd for C12H13NO2 : C, 70.92; H , 6.45; N, 6.89%. Actual values: C, 0.75; H, 6.36; N, 6.76%. Example 9 To 3.0 ml of tetrahydrofuran, add 0.7 ml (3.3 mmol) of hexamethyldisilazane under ice cooling, then add 1.4 ml of butyllithium (1.78 M THF solution), and heat at 5°C.
The mixture was stirred at 10°C for 1 hour. A solution of 155 mg (1.0 mmol) of 2-acetoxy-2-ethylbutanenitrile obtained in Reference Example 7 in 3.0 ml of tetrahydrofuran was slowly dropped into this solution at -76°C.
After stirring at −76° C. for an hour, 2.0 ml of a saturated ammonium chloride aqueous solution was added to stop the reaction. Low-boiling substances were distilled off from the reaction mixture under reduced pressure, and the residue was separated and purified using silica gel thin layer chromatography (developing solvent: dichloromethane-methanol 10:1).
Target 4-amino-5,5-diethyl-2
94 mg (yield 61%) of white crystals of (5H)-furanone was obtained.

mp 162〜164℃.1 H−NMR(CDCl3−DMSO−d63:1)δ0.83
(t,J=7.2Hz6H),1.54〜1.89(m,4H),
4.67(s,1H),5.94(brs,2H). IR(KBr):3425,3375,3200,3000,1715,
1665,1650,1605,1590cm-1. MS:m/z(相対強度),156(M++1,1),
155(M+,9),127(18),126(100),84(10),
70(14),57(53),41(12). C8H13NO2に対する計算値:C,61.91; H,8.44;N,9.03%. 実測値:C,61.81;H,8.40;N,8.95%. 実施例 10 テトラヒドロフラン3.0mlに、氷冷下、ヘキサ
メチルジシラザン0.7ml(3.3mmol)、ついでブチ
ルリチウム(1.77M THF溶液)1.4mlを加え、5
℃から10℃で1時間撹拌した。この溶液中に、参
考例8で得られた−アセトキシ−2,2−ペンタ
メチレンアセトニトリル167mg(1.0mmol)のテ
トラヒドロフラン溶液を−76℃でゆつくりと滴下
した。−76℃から−70℃で1.5時間撹拌したのち、
飽和塩化アンモニウム水溶液3.0mlを加えて反応
を停止させた。反応混合物より低沸点物質を減圧
留去した残渣より、シリカゲル薄層クロマトグラ
フイー(展開溶媒 ジクロロメタン−メタノール
10:1)で分離精製して、目的とする4−アミノ
−5,5−ペンタメチレン−2(5H)フラノンの
白色結晶118mg(収率71%)を得た。
mp 162-164℃. 1 H-NMR (CDCl 3 -DMSO-d 6 3:1) δ0.83
(t, J=7.2Hz6H), 1.54~1.89 (m, 4H),
4.67 (s, 1H), 5.94 (brs, 2H). IR (KBr): 3425, 3375, 3200, 3000, 1715,
1665, 1650, 1605, 1590cm -1 .MS: m/z (relative intensity), 156 (M + +1, 1),
155 (M + , 9), 127 (18), 126 (100), 84 (10),
70 (14), 57 (53), 41 (12). Calculated values for C8H13NO2 : C, 61.91; H, 8.44; N, 9.03%. Actual values: C, 61.81; H, 8.40; N, 8.95%. Example 10 To 3.0 ml of tetrahydrofuran, add 0.7 ml (3.3 mmol) of hexamethyldisilazane and then 1.4 ml of butyllithium (1.77M THF solution) under ice cooling.
The mixture was stirred at 10°C to 10°C for 1 hour. A tetrahydrofuran solution containing 167 mg (1.0 mmol) of -acetoxy-2,2-pentamethylene acetonitrile obtained in Reference Example 8 was slowly added dropwise into this solution at -76°C. After stirring at −76°C to −70°C for 1.5 hours,
The reaction was stopped by adding 3.0 ml of saturated ammonium chloride aqueous solution. Silica gel thin layer chromatography (developing solvent: dichloromethane-methanol) was performed on the residue obtained by distilling off low-boiling substances from the reaction mixture under reduced pressure
10:1) to obtain 118 mg (yield 71%) of white crystals of the desired 4-amino-5,5-pentamethylene-2(5H) furanone.

mp 194.5〜195.5℃.1 H−NMR(CDCl3−DMSO−d61:1):δ1.33
〜1.93(m,10H),4.48(s,1H),6.56(br
s,2H). IR(KBr):3400,3200,2950,2850,1710,
1670,1650,1600cm-1. MS:m/z(相対強度),168(M++1,5),
167(M+,38),124(27),112(16),111
(100),99(32),84(65),83(10),81(27),
69(20),66(77),55(16). C9H13NO2に対する計計算値:C,64.65,; H,7.84;N8.38%. 実測値:C,64.56;H,7.60;N,8.33%. 実施例 11 テトラヒドロフラン5.0mlに参考例9で得られ
た2−メチル−2−プロピオニルオキシプロパン
ニトリル26mg(1.8×10-4mol)を溶解し、溶液を
−78℃に冷却しここへリチウムビス(トリメチル
シリル)アミド(1.0M THF溶液)0.45mlをゆつ
くりと滴下した。−78℃から−70℃で4時間撹拌
した後、飽和塩化アンモニウム水溶液1.0mlを加
えて反応を停止させて、低沸点物質を減圧留去し
た。残渣より、シリカゲル薄層クロマトグラフイ
ー(展開溶媒 ジクロロメタン−メタノール10:
1)で分離精製して、目的とする4−アミノ−
3,5,5−トリメチル−2(5H)−フラノンの
白色結晶23mg(収率89%)を得た。
mp 194.5-195.5℃. 1H -NMR ( CDCl3 -DMSO- d6 1:1): δ1.33
~1.93 (m, 10H), 4.48 (s, 1H), 6.56 (br
s, 2H). IR (KBr): 3400, 3200, 2950, 2850, 1710,
1670, 1650, 1600cm -1 . MS: m/z (relative intensity), 168 (M + +1, 5),
167 (M + , 38), 124 (27), 112 (16), 111
(100), 99 (32), 84 (65), 83 (10), 81 (27),
69 (20), 66 (77), 55 (16). Total calculated values for C9H13NO2 : C, 64.65; H, 7.84; N8.38% . Actual values: C, 64.56; H, 7.60; N, 8.33%. Example 11 26 mg (1.8 x 10 -4 mol) of 2-methyl-2-propionyloxypropanenitrile obtained in Reference Example 9 was dissolved in 5.0 ml of tetrahydrofuran, the solution was cooled to -78°C, and lithium bis(trimethylsilyl)amide was added thereto. (1.0M THF solution) 0.45ml was slowly added dropwise. After stirring at -78°C to -70°C for 4 hours, 1.0 ml of saturated ammonium chloride aqueous solution was added to stop the reaction, and low-boiling substances were distilled off under reduced pressure. The residue was subjected to silica gel thin layer chromatography (developing solvent: dichloromethane-methanol 10:
Separate and purify in step 1) to obtain the desired 4-amino-
23 mg (yield: 89%) of white crystals of 3,5,5-trimethyl-2(5H)-furanone was obtained.

mp 205〜208℃.1 H−NMR(CDCl3−DMSO−d63:1):δ1.43
(s,6H),1.61(s,3H),5.69(br s,
2H). IR(KBr):3400,3230,3000,2950,1710,
1665,1600,1475,1430,1345,1215,
1195,1100,1000cm-1. MS:m/z(相対強度),142(M++1,16),
141(M+,71),126(100),98(23),70(16),
56(19),55(32),54(15),43(38), C7H11NO2(M+)としての計算値:m/z 141.0790;実測値:1410770. 実施例 12 テトラヒドロフラン3.0mlに氷冷下でヘキサメ
チルジシラザン0.7ml(3.3mmol)、ついで、ブチ
ルリチウム(1.7M THF溶液)1.4mlを加え、5
℃から10℃で1時間撹拌した。この溶液中に、参
考例10で得られた、2−クロロアセトキシ−2−
メチルプロパンニトリル162mg(1.0mmol)のテ
トラヒドロフラン3.0ml溶液を−76℃でゆつくり
と滴下した。−76℃とから−66℃で2時間撹拌し
た後、飽和塩化アンモニウム水溶液1.0mlを加え
て、反応を停止させた。反応混合物より低沸点物
質を減圧留去した残渣よりシリカゲル薄層クロマ
トグラフイー(展開溶媒 ジクロロメタン−メタ
ノール10:1)で分離精製を行い目的とする、4
−アミノ−3−クロロ−5−メチル−2(5H)−
フラノンの白色結晶26mg(収率16%)を得た。
mp 205-208℃. 1 H-NMR (CDCl 3 -DMSO-d 6 3:1): δ1.43
(s, 6H), 1.61 (s, 3H), 5.69 (br s,
2H). IR (KBr): 3400, 3230, 3000, 2950, 1710,
1665, 1600, 1475, 1430, 1345, 1215,
1195, 1100, 1000cm -1 .MS: m/z (relative intensity), 142 (M + +1, 16),
141 (M + , 71), 126 (100), 98 (23), 70 (16),
56 (19), 55 (32), 54 (15), 43 (38), Calculated value as C 7 H 11 NO 2 (M + ): m/z 141.0790; Actual value: 1410770. Example 12 Add 0.7 ml (3.3 mmol) of hexamethyldisilazane to 3.0 ml of tetrahydrofuran under ice-cooling, then add 1.4 ml of butyllithium (1.7 M THF solution).
The mixture was stirred at 10°C to 10°C for 1 hour. In this solution, 2-chloroacetoxy-2- obtained in Reference Example 10 was added.
A solution of 162 mg (1.0 mmol) of methylpropane nitrile in 3.0 ml of tetrahydrofuran was slowly added dropwise at -76°C. After stirring at -76°C to -66°C for 2 hours, 1.0 ml of saturated ammonium chloride aqueous solution was added to stop the reaction. After removing low-boiling substances from the reaction mixture under reduced pressure, the residue was separated and purified using silica gel thin layer chromatography (developing solvent: dichloromethane-methanol 10:1) to obtain the desired product, 4.
-amino-3-chloro-5-methyl-2(5H)-
26 mg (yield 16%) of white crystals of furanone was obtained.

mp 170〜172℃・1 H−NMR(CDCl3−DMSO−d61:1):δ 1.48(s,6H),6.88(br s,2H). IR(KBr):3450(sh),3375,3220,3000,1720,
1670,1650,1600,1300,1225,1140,1040
cm-1. MS:m/z(相対強度),164(3),163(18),16
(8),161(54),148(33),146(100),118
(36),104(39,82(11),76(13),75(17),70
(24),68(21),43(60). C6H8C1NO2(M+)としての計算値:m/z 161.0242;実測値:161.0209. 実施例 13 テトラヒドロフラン30ml中に、水素化ナトリウ
ム30mg(油中50%の純度、0.63mmol)を加えた。
この懸濁液中に、参考例11で得られた、2−メチ
ル−2−フエニルチオアセトキシプロパンニトリ
ル100mg(0.43mmol)のテトラヒドロフラン1.0
ml溶液を、加熱下でゆつくりと滴下したのち、さ
らに4時間加熱撹拌した。反応液より、シリカゲ
ル薄層クロマトグラフイー(展開溶媒 ヘキサン
−酢酸エチル1:1)で分離精製して目的とする
4−アミノ−5,5−ジメチル−3−フエニルチ
オ−2(5H)フラノンの白色結晶22mg(収率22
%)を得た。
mp 170-172℃・1H -NMR ( CDCl3- DMSO- d6 1:1): δ 1.48 (s, 6H), 6.88 (br s, 2H). IR (KBr): 3450 (sh), 3375, 3220, 3000, 1720,
1670, 1650, 1600, 1300, 1225, 1140, 1040
cm -1 .MS: m/z (relative intensity), 164 (3), 163 (18), 16
(8), 161 (54), 148 (33), 146 (100), 118
(36), 104 (39, 82 (11), 76 (13), 75 (17), 70
(24), 68 (21), 43 (60). Calculated value as C 6 H 8 C1NO 2 (M + ): m/z 161.0242; Actual value: 161.0209. Example 13 In 30 ml of tetrahydrofuran were added 30 mg of sodium hydride (50% purity in oil, 0.63 mmol).
In this suspension, 100 mg (0.43 mmol) of 2-methyl-2-phenylthioacetoxypropanenitrile obtained in Reference Example 11 and 1.0 mg of tetrahydrofuran were added.
ml solution was slowly added dropwise under heating, and the mixture was further heated and stirred for 4 hours. The desired white 4-amino-5,5-dimethyl-3-phenylthio-2(5H) furanone was separated and purified from the reaction solution using silica gel thin layer chromatography (developing solvent: hexane-ethyl acetate 1:1). 22 mg of crystals (yield 22
%) was obtained.

mp 154.5〜156.5℃.1 H−NMR(CDCl3):δ1.55(s,6H),6.66(br
s,2H),7.00〜7.33(m,5H). IR(KBr):3460,3325,3270,3200,1710,
1640,1585,1480,1410,1290,1035,740
cm-1. MS:m/z(相対強度),237(M++2,6),
236(M++1,16),235(M+,100),220
(8),192(7),176(5),151(10),150
(28),149(12),142(43),141(12),132
(10),121(24),114(22),113(15),110
(6),109(8),105(11),86(14),77(16),
68(15),65(10),51(19),45(11),43(65),
42(12),39(15). C12H13NO2S(M+)としての計算値:m/z 235.0663;実測値:235.0646. 実施例 14 テトラヒドロフラン30ml中に、水素化ナトリウ
ム20mg(純度ca.50%,0.42mmol)を加えた。こ
の懸濁液中に、参考例12で得られた、2−メチル
−−フエニルスルフイニルアセトキシプロパンニ
トリル50mg(0.2mmol)のテトラヒドロフラン
2.0ml溶液を加熱下でゆつくりと滴下した。滴下
終了後、さらに2時間加熱撹拌した。反応液よ
り、シリカゲル薄層クロマトグラフイー(展開溶
媒 ジクロロメタン−メタノール10:1)分離精
製して、目的とする4−アミノ−5,5−ジメチ
ル−3−フエニルスルフイニル−2−(5H)−フ
ラノンの無色結晶43mg(収率86%)を得た。
mp 154.5-156.5℃. 1 H-NMR (CDCl 3 ): δ1.55 (s, 6H), 6.66 (br
s, 2H), 7.00-7.33 (m, 5H). IR (KBr): 3460, 3325, 3270, 3200, 1710,
1640, 1585, 1480, 1410, 1290, 1035, 740
cm -1 .MS: m/z (relative intensity), 237 (M + +2,6),
236 (M + + 1, 16), 235 (M + , 100), 220
(8), 192 (7), 176 (5), 151 (10), 150
(28), 149 (12), 142 (43), 141 (12), 132
(10), 121 (24), 114 (22), 113 (15), 110
(6), 109 (8), 105 (11), 86 (14), 77 (16),
68 (15), 65 (10), 51 (19), 45 (11), 43 (65),
42(12), 39(15). Calculated value as C 12 H 13 NO 2 S (M + ): m/z 235.0663; Actual value: 235.0646. Example 14 20 mg of sodium hydride (purity ca. 50%, 0.42 mmol) was added to 30 ml of tetrahydrofuran. In this suspension, 50 mg (0.2 mmol) of 2-methyl--phenylsulfinyl acetoxypropanenitrile obtained in Reference Example 12 was added to tetrahydrofuran.
2.0 ml of the solution was slowly added dropwise under heating. After the dropwise addition was completed, the mixture was further heated and stirred for 2 hours. The reaction solution was separated and purified by silica gel thin layer chromatography (developing solvent: dichloromethane-methanol 10:1) to obtain the desired 4-amino-5,5-dimethyl-3-phenylsulfinyl-2-(5H). - 43 mg (yield 86%) of colorless crystals of furanone were obtained.

mp 137〜138℃.1 H−NMR(CDCl3−DMSO−d610:1):δ1.41
および1.53(2s,6H),7.15(br s,1H),
7.33〜7.57(m,3H),7.57〜7.90(m,2H),
7.33〜7.90(br s,1H). IR(KBr):3350,3200,3000,1715,1665,
1590,1580(sh),1480,1460,1410,1370,
1280,1225,1200,1160,1080,1045(sh),
1025cm-1. MS:m/z(相対強度),251(M+,3),235
(5),204(15),203(100),188(32),160
(42),158(11),126(9),125(7),117
(14),109(4),86(27),78(25),77(17),
68(18),51(18),43(23),39(10). C12H13NO3Sに対する計算値:C,57.35; H,5.21;N,5.57;S,12.76%. 実測値:C,57.27;H,5.11;N,5.48;S, 12.94%. 実施例 15 テトラヒドロフラン30ml中に、水素化ナトリウ
ム20mg(油中、ca50%の純度、0.42mmol)を加
えた懸濁液中に、参考例13で得られた2−メチル
−2−フエニルアセチルプロパンニトリル100mg
のテトラヒドロフラン5ml溶液を加熱下でゆつく
と滴したのち、さらに、3時間加熱撹拌した。反
応液より、シリカゲル薄層クロマトグラフイー
(展開溶媒 ジクロロメタ−メタノール10:1)
で分離精製して、目的とする4−アミノ−5,5
−ジメチル−3−フエニル−(5H)−フラノこの
無色結晶43mg(収率43%)を得た。
mp 137-138℃. 1H -NMR ( CDCl3 -DMSO- d6 10:1): δ1.41
and 1.53 (2s, 6H), 7.15 (br s, 1H),
7.33-7.57 (m, 3H), 7.57-7.90 (m, 2H),
7.33-7.90 (br s, 1H). IR (KBr): 3350, 3200, 3000, 1715, 1665,
1590, 1580 (sh), 1480, 1460, 1410, 1370,
1280, 1225, 1200, 1160, 1080, 1045 (sh),
1025cm -1 .MS: m/z (relative intensity), 251 (M + , 3), 235
(5), 204 (15), 203 (100), 188 (32), 160
(42), 158 (11), 126 (9), 125 (7), 117
(14), 109 (4), 86 (27), 78 (25), 77 (17),
68 (18), 51 (18), 43 (23), 39 (10). Calculated values for C12H13NO3S : C, 57.35; H, 5.21; N , 5.57; S, 12.76%. Actual value: C, 57.27; H, 5.11; N, 5.48; S, 12.94%. Example 15 100 mg of 2-methyl-2-phenylacetylpropanenitrile obtained in Reference Example 13 was added to a suspension of 20 mg of sodium hydride (in oil, purity of ca 50%, 0.42 mmol) in 30 ml of tetrahydrofuran.
A solution of 5 ml of tetrahydrofuran was slowly added dropwise under heating, and the mixture was further heated and stirred for 3 hours. Silica gel thin layer chromatography (developing solvent: dichloromethane-methanol 10:1) from the reaction solution.
Separate and purify the desired 4-amino-5,5
-dimethyl-3-phenyl-(5H)-furano 43 mg (yield 43%) of colorless crystals were obtained.

mp 148〜150℃.1 H−NMR(CDCl3−DMSO−d61:1):δ 1.57(s,6H),6.40(br,s,2H),7.15〜
7.65(m,5H). IR(neat):3400,3330,3000,1700,1640,
1615,1595,1500,1470,1425,1370,
1330,1245,1200,1155,1120,1010,970,
920cm-1. MS:m/z(相対強度),205(M++2,1),
204(M++1,15),203(M+,100),188
(49),160(55)158(11),132(22),118(33),
117(63),115(14),91(14),89(24),77
(6),43(55). C12H13NO2に対する計算値:C,70.92; H,6.45;N,6.89%. 実測値:C,70.91;H,6.49;N,6.85%. 実施例 16 水素化ナトリウム41mg(油中50%純度,
0.85mmol)のテトラヒドロフラン30ml懸濁液中
に、参考例14で得た2−アセトアセトキシ−2−
メチルプロパンニトリル100mg(0.59mmol)のテ
トラヒドロフラン1.0ml溶液を、加熱下でゆつく
りと加えた。滴下終予後さらに12時間加熱撹拌し
たのち、反応液より低沸点物質を減圧留去した残
渣よりシリカゲル薄層クロマトグラフイー(展開
溶媒 ジクロロメタン−メタノール10:1)で分
離精製して、目的とする3−アセチル−4−アミ
ノ−5,5−ジメチル−2(5H)−フラノンの無
色結晶28mgを得た。(収率28%) mp 188〜189℃.1 H−NMR(CDCl3):δ1.56(s,6H),2.46(s,
3H),7.38(br s,1H),8.82(br s,1H). IR(KBr):3370,1710,1650,1540,1360,
1320,1025cm-1. MS:m/z(相対強度),169(M+,11),154
(12),112(8),87(67),86(67),66(100),
48(14),46(24),43(19). C8H11NO3に対する計算値:C,56.80; H,6.55;N,8.28%. 実測値:C,56.77;H,6.65;N,8.02%. 実施例 17 テトラヒドロフラン5.0mlにアセトンシアノヒ
ドリン100mg(1.2mmol)を溶解した溶液に、氷
冷下ジケテン108mg(1.3mmol)、ついで、トリエ
チルアミン0.05mlを加えた。氷温で1時間撹拌し
た後、さらにトリエチルアミン0.18ml
(1.3mmol)を加えた。氷温から室温へ自然昇温
させながら6時間撹拌した。反応液より、溶媒等
の低沸点物質を減圧留去した後、残渣よりシリカ
ゲル薄層クロマトグラフイー(展開溶媒 ジクロ
ロメタン−メタノール10:1)で分離精製を行
い、無色結晶51mgを得た。(収率38%)。このもの
は、実施例16で得られた化合物と同一のスペクト
ルデーターを示した。
mp 148-150℃. 1 H-NMR (CDCl 3 -DMSO-d 6 1:1): δ 1.57 (s, 6H), 6.40 (br, s, 2H), 7.15 ~
7.65 (m, 5H). IR (neat): 3400, 3330, 3000, 1700, 1640,
1615, 1595, 1500, 1470, 1425, 1370,
1330, 1245, 1200, 1155, 1120, 1010, 970,
920cm -1 .MS: m/z (relative intensity), 205 (M + +2, 1),
204 (M + + 1, 15), 203 (M + , 100), 188
(49), 160 (55) 158 (11), 132 (22), 118 (33),
117 (63), 115 (14), 91 (14), 89 (24), 77
(6), 43(55). Calculated values for C12H13NO2 : C, 70.92; H , 6.45; N, 6.89%. Actual values: C, 70.91; H, 6.49; N, 6.85%. Example 16 Sodium hydride 41mg (50% purity in oil,
2-acetoacetoxy-2- obtained in Reference Example 14 was added to a suspension of 0.85 mmol) in 30 ml of tetrahydrofuran.
A solution of 100 mg (0.59 mmol) of methylpropane nitrile in 1.0 ml of tetrahydrofuran was slowly added under heating. After further heating and stirring for 12 hours, low boiling point substances were distilled off from the reaction solution under reduced pressure, and the residue was separated and purified using silica gel thin layer chromatography (developing solvent: dichloromethane-methanol 10:1) to obtain the desired 3. 28 mg of colorless crystals of -acetyl-4-amino-5,5-dimethyl-2(5H)-furanone were obtained. (Yield 28%) mp 188-189℃. 1 H-NMR (CDCl 3 ): δ1.56 (s, 6H), 2.46 (s,
3H), 7.38 (br s, 1H), 8.82 (br s, 1H). IR (KBr): 3370, 1710, 1650, 1540, 1360,
1320, 1025cm -1 .MS: m/z (relative intensity), 169 (M + , 11), 154
(12), 112 (8), 87 (67), 86 (67), 66 (100),
48 (14), 46 (24), 43 (19). Calculated values for C8H11NO3 : C, 56.80; H, 6.55; N, 8.28%. Actual values: C, 56.77; H, 6.65; N, 8.02%. Example 17 To a solution of 100 mg (1.2 mmol) of acetone cyanohydrin dissolved in 5.0 ml of tetrahydrofuran, 108 mg (1.3 mmol) of diketene and then 0.05 ml of triethylamine were added under ice cooling. After stirring for 1 hour at ice temperature, add 0.18 ml of triethylamine.
(1.3 mmol) was added. The mixture was stirred for 6 hours while allowing the temperature to rise naturally from ice temperature to room temperature. After removing low-boiling substances such as the solvent from the reaction solution under reduced pressure, the residue was separated and purified by silica gel thin layer chromatography (developing solvent: dichloromethane-methanol 10:1) to obtain 51 mg of colorless crystals. (Yield 38%). This product showed the same spectral data as the compound obtained in Example 16.

Claims (1)

【特許請求の範囲】 1 一般式 で表わされる化合物を塩基で処理することからな
る、一般式 で表わされるアミノフラノンの製造方法(式中、
R1,R2はアルキルまたはアリール基であり、R1
とR2は一体となりアルキレン基またはポリメチ
レン基を形成し得る。R3は水素原子、ハロゲン
原子、低級アルキル基、アシル基、アリール基、
アリールチオ基またはアリールスルフイニル基で
ある。)。
[Claims] 1. General formula The general formula consists of treating a compound represented by with a base. A method for producing aminofuranone represented by (in the formula,
R 1 and R 2 are alkyl or aryl groups, and R 1
and R 2 can be combined to form an alkylene group or a polymethylene group. R 3 is a hydrogen atom, a halogen atom, a lower alkyl group, an acyl group, an aryl group,
It is an arylthio group or an arylsulfinyl group. ).
JP59222215A 1984-10-24 1984-10-24 Production of aminofuranone Granted JPS61100577A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59222215A JPS61100577A (en) 1984-10-24 1984-10-24 Production of aminofuranone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59222215A JPS61100577A (en) 1984-10-24 1984-10-24 Production of aminofuranone

Publications (2)

Publication Number Publication Date
JPS61100577A JPS61100577A (en) 1986-05-19
JPH0417193B2 true JPH0417193B2 (en) 1992-03-25

Family

ID=16778931

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59222215A Granted JPS61100577A (en) 1984-10-24 1984-10-24 Production of aminofuranone

Country Status (1)

Country Link
JP (1) JPS61100577A (en)

Also Published As

Publication number Publication date
JPS61100577A (en) 1986-05-19

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