JP2008013507A - Method for producing cinnamyl sesamol ether - Google Patents

Method for producing cinnamyl sesamol ether Download PDF

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JP2008013507A
JP2008013507A JP2006187601A JP2006187601A JP2008013507A JP 2008013507 A JP2008013507 A JP 2008013507A JP 2006187601 A JP2006187601 A JP 2006187601A JP 2006187601 A JP2006187601 A JP 2006187601A JP 2008013507 A JP2008013507 A JP 2008013507A
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sesamol
ether
cinnamyl
group
chemical formula
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Shinji Tanimori
紳治 谷森
Mitsumune Kirihata
光統 切畑
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Osaka University NUC
Osaka Prefecture University
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Osaka Prefecture University
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for producing cinnamyl sesamol ether in mild conditions. <P>SOLUTION: This method for producing the cinnamyl sesamol ether comprises reacting a halogenated benzene with a compound represented by a chemical formula (I). <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、シナミルセサモールエーテルの新規な製造方法に関する。   The present invention relates to a novel process for producing cinnamyl sesamol ether.

下記化学式(II)で表されるシナミルセサモールエーテルは、イエバエに対する不妊化剤として知られている(例えば、特許文献1参照)。また、ヒメカツオブシムシ(black carpet beetle)の幼虫に対して、殺虫効果があることも知られている(例えば、非特許文献1参照)。

Figure 2008013507
Cinnamyl sesamol ether represented by the following chemical formula (II) is known as a fertility agent for houseflies (see, for example, Patent Document 1). It is also known to have an insecticidal effect against larvae of black carpet beetles (see, for example, Non-Patent Document 1).
Figure 2008013507

化学式(II)で表されるシナミルセサモールエーテルは、下記化学式で表すようにシナミルアルコールとセサモールとを、蟻酸あるいは酢酸を用いて反応させて得る。しかし、この反応には、大量の酸を必要とする。また、反応条件も、100℃で還流する必要がある。さらに、副生成物として、位置異性体である化学式(III)で表される化合物が生成されるという問題がある。

Figure 2008013507
米国特許第4681703号明細書 The cinnamyl sesamol ether represented by the chemical formula (II) is obtained by reacting cinamil alcohol and sesamol using formic acid or acetic acid as represented by the following chemical formula. However, this reaction requires a large amount of acid. The reaction conditions also need to be refluxed at 100 ° C. Furthermore, there is a problem that a compound represented by the chemical formula (III) which is a regioisomer is generated as a by-product.
Figure 2008013507
US Pat. No. 4,681,703

すなわち、本発明は、上記問題に鑑みなされたものであり、その目的は、温和な条件でシナミルセサモールエーテルを製造する方法を提供することにある。   That is, this invention is made | formed in view of the said problem, The objective is to provide the method of manufacturing a cinamil sesamol ether on mild conditions.

すなわち、本発明は、以下のとおりである。   That is, the present invention is as follows.

本発明のシナミルセサモールエーテルの製造方法は、ハロゲン化ベンゼンと、下記化学式(I)で表される化合物とを反応させる。

Figure 2008013507
In the method for producing cinnamyl sesamol ether of the present invention, a halogenated benzene is reacted with a compound represented by the following chemical formula (I).
Figure 2008013507

(式中、R1は、アルキル基、アルケニル基、アリール基を示す。)   (In the formula, R1 represents an alkyl group, an alkenyl group, or an aryl group.)

また、本発明のシナミルセサモールエーテルの製造方法は、シンナミルハロゲンとセサモールとを反応させるものであってもよい。   Moreover, the manufacturing method of the cinnamyl sesamol ether of this invention may make a cinnamyl halogen and a sesamol react.

本発明は、ハロゲン化ベンゼンと、下記化学式(I)で表される化合物とを反応させることで、温和な条件でシナミルセサモールエーテルを製造することができる。   In the present invention, cinnamyl sesamol ether can be produced under mild conditions by reacting a halogenated benzene with a compound represented by the following chemical formula (I).

以下に、本発明を詳細に説明する。本発明では、2通りの方法で、シナミルセサモールエーテルを製造する。   The present invention is described in detail below. In the present invention, cinnamyl sesamol ether is produced by two methods.

[第1の合成方法]
(化学式(I)で表される化合物)
下記化学式(I)で表される化合物は、例えば以下のようにしてセサモールから合成する。
[First Synthesis Method]
(Compound represented by chemical formula (I))
The compound represented by the following chemical formula (I) is synthesized from sesamol as follows, for example.

まず、セサモール 1モルに対して、3−ブロモプロペン 1.2モルを加え、ナトリウム 1.13モルと乾燥させたトルエンの存在下で、100℃〜120℃に保ち、85時間還流しながら反応させて、化学式(IV)で表される化合物を生成する。

Figure 2008013507
First, to 1 mol of sesamol, 1.2 mol of 3-bromopropene was added, and in the presence of 1.13 mol of sodium and dried toluene, the reaction was carried out while maintaining at 100 ° C. to 120 ° C. and refluxing for 85 hours. Thus, a compound represented by the chemical formula (IV) is generated.
Figure 2008013507

次に、化学式(IV)で表される化合物 1モルに、R1−I 1.6モルと炭酸カリウムと 0.3モルを加え、アセトン中で、50℃〜70℃に保ち、29時間還流しながら反応させて、化学式(I)で表される化合物を生成する。

Figure 2008013507
Next, 1.6 mol of R1-I and 0.3 mol of potassium carbonate are added to 1 mol of the compound represented by the chemical formula (IV), and the mixture is kept at 50 ° C. to 70 ° C. in acetone and refluxed for 29 hours. To produce a compound represented by the chemical formula (I).
Figure 2008013507

式中、R1は、アルキル基、アルケニル基、アリール基を示す。   In the formula, R1 represents an alkyl group, an alkenyl group, or an aryl group.

ここで、アルキル基とは、メチル基、エチル基、1−プロピル基、2−プロピル基などの炭素数1〜10の分枝を有していてもよいアルキル基を、エチレン基、プロピレン基などの炭素数1〜10の分枝を有していてもよいアルキル基を、アリール基としては、フェニル基などの置換基を有していてもよいアリール基を示す。好ましいR1は、メチル基である。   Here, the alkyl group refers to an alkyl group that may have 1 to 10 carbon atoms such as a methyl group, an ethyl group, a 1-propyl group, or a 2-propyl group, an ethylene group, a propylene group, or the like. The aryl group which may have a branched group having 1 to 10 carbon atoms is an aryl group which may have a substituent such as a phenyl group. Preferred R1 is a methyl group.

(シナミルセサモールエーテルの製造)
化学式(I)で表される化合物 1モルに、ハロゲン化ベンゼン 1.4モルを加え、触媒として酢酸パラジウム 0.25モルを用い、トリフェニルホスフィン 0.87モルと炭酸ナトリウムとを加えて、ジメチルホルムアミド(DMF) 0.25モル中で、110℃で69時間反応させて、シナミルセサモールエーテル(V)を製造する。

Figure 2008013507
(Manufacture of sinamyl sesamol ether)
To 1 mol of the compound represented by the chemical formula (I), 1.4 mol of halogenated benzene is added, 0.25 mol of palladium acetate is used as a catalyst, 0.87 mol of triphenylphosphine and sodium carbonate are added, and dimethyl Formamide (DMF) is reacted in 0.25 mol at 110 ° C. for 69 hours to produce cinnamyl sesamol ether (V).
Figure 2008013507

この反応に用いるハロゲン化ベンゼンとしては、クロロベンゼン、ブロモベンゼン、ヨードベンゼンなどが挙げられる。好ましくは、シナミルセサモールエーテルの収率が高くなるヨードベンゼンである。   Examples of the halogenated benzene used in this reaction include chlorobenzene, bromobenzene, and iodobenzene. Preferably, it is iodobenzene which increases the yield of cinnamyl sesamol ether.

得られたシナミルセサモールエーテルは、酢酸エチル、エーテル、ベンゼン、塩化メチレンなどの公知の溶媒で抽出し、乾燥させる。乾燥後、シリカゲルを用いて濾過した後、得られた濾液を濃縮する。濃縮残渣を、ヘキサン・酢酸エチル混液などを展開溶媒として用いて、シリカゲル分取薄層クロマトグラフィーやカラムクロマトグラフィーにより目的物を分取する。展開溶媒の種類、混合比などは、得られるフラン誘導体により異なる。また、クロマトグラフィーの回数は、1回に限らず、複数回行ってもよい。   The obtained sinamyl sesamol ether is extracted with a known solvent such as ethyl acetate, ether, benzene, methylene chloride and dried. After drying and filtering using silica gel, the obtained filtrate is concentrated. The target product is separated from the concentrated residue by silica gel preparative thin layer chromatography or column chromatography using hexane / ethyl acetate mixed solution as a developing solvent. The kind of developing solvent, the mixing ratio, and the like vary depending on the furan derivative obtained. In addition, the number of times of chromatography is not limited to one, and may be performed a plurality of times.

[第2の合成方法]
まず、次式に示すように、セサモールの乾燥トルエン溶液を40℃に加熱しながら、ナトリウムを加え、100℃〜120℃に保ち、還流しながら混合して反応させる。次に、この反応混合液を60℃まで冷却した後、シナミルブロマイドを滴下して、加熱還流(100℃〜120℃)したものを、室温まで温度を下げ、濾過する。濾液を減圧下濃縮し、濃縮残渣を、ヘキサン・酢酸エチル混液などを展開溶媒として用いて、シリカゲル分取薄層クロマトグラフィーやシリカゲルカラムクロマトグラフィーにより、化学式(VI)で表される化合物を得る。

Figure 2008013507
[Second Synthesis Method]
First, as shown in the following formula, sodium is added while heating a dry toluene solution of sesamol to 40 ° C., and the mixture is kept at 100 ° C. to 120 ° C., and mixed and reacted while refluxing. Next, after cooling this reaction liquid mixture to 60 degreeC, the cinnamyl bromide is dripped and it heats and recirculate | refluxs (100 degreeC-120 degreeC). The filtrate is concentrated under reduced pressure, and the compound represented by the chemical formula (VI) is obtained by silica gel preparative thin layer chromatography or silica gel column chromatography using the hexane / ethyl acetate mixed solution as a developing solvent for the concentrated residue.
Figure 2008013507

次に、得られた化学式(VI)で表される化合物をアセトンに溶解し、炭酸カリウムおよびヨウ化メチル、ジメチル硫酸を加え、24時間加熱還流する。還流終了後、室温まで温度を下げ、濾過する。濾液を減圧下濃縮し、濃縮残渣を、ヘキサン・酢酸エチル混液などを展開溶媒として用いて、シリカゲル分取薄層クロマトグラフィーやシリカゲルカラムクロマトグラフィーにより、シナミルセサモールエーテルを得る。

Figure 2008013507
Next, the obtained compound represented by the chemical formula (VI) is dissolved in acetone, potassium carbonate, methyl iodide and dimethyl sulfate are added, and the mixture is heated to reflux for 24 hours. After the reflux, the temperature is lowered to room temperature and filtered. The filtrate is concentrated under reduced pressure, and the concentrated residue is subjected to silica gel preparative thin layer chromatography or silica gel column chromatography using hexane / ethyl acetate mixed solution or the like as a developing solvent to obtain cinnamyl sesamol ether.
Figure 2008013507

なお、上記ヨウ化メチル、ジメチル硫酸と同様に、ヨウ化アルキル、ヨウ化アルケニル、ヨウ化アリール、ジアルキル硫酸、ジアルケニル硫酸、ジアリール硫酸などを用いてもよい。ここで、アルキル基とは、メチル基、エチル基、1−プロピル基、2−プロピル基などの炭素数1〜10の分枝を有していてもよいアルキル基を、エチレン基、プロピレン基などの炭素数1〜10の分枝を有していてもよいアルキル基を、アリール基としては、フェニル基などの置換基を有していてもよいアリール基を示す。好ましいR1は、メチル基である。   Note that alkyl iodide, alkenyl iodide, aryl iodide, dialkyl sulfate, dialkenyl sulfate, diaryl sulfate and the like may be used in the same manner as methyl iodide and dimethyl sulfate. Here, the alkyl group refers to an alkyl group that may have 1 to 10 carbon atoms such as a methyl group, an ethyl group, a 1-propyl group, or a 2-propyl group, an ethylene group, a propylene group, or the like. The aryl group which may have a branched group having 1 to 10 carbon atoms is an aryl group which may have a substituent such as a phenyl group. Preferred R1 is a methyl group.

本発明の方法を用いてシナミルセサモールエーテルを製造すると、温和な条件で簡便にシナミルセサモールエーテルを製造することができる。   When cinamil sesamol ether is produced using the method of the present invention, cinamil sesamol ether can be easily produced under mild conditions.

以下、実施例により本発明を説明するが、本発明はかかる実施例に限定されるものではない。   EXAMPLES Hereinafter, although an Example demonstrates this invention, this invention is not limited to this Example.

[実施例1]
ヨードベンゼン(27.6mg、0.14mmol)、化学式(1)で表される化合物(20mg、0.10mmol)、酢酸パラジウム(5.0mg、0.02mmol、20mol%)、トリフェニルホスフィン(8.57mg、0.033mmol)、炭酸ナトリウム(17.4mg、0.208mmol)をジメチルホルムアミド 1mlに溶解した液を、窒素置換し、100℃で64時間攪拌しながら反応させた。得られた反応生成物を含む混合液を室温まで冷まし、水 10mlで希釈し、酢酸エチルで抽出した。乾燥後、ろ過し、濾液は、減圧下で、濃縮した。残渣を、ヘキサン・酢酸エチル混液(50:1(体積比))を用いてシリカゲル分取TLCで分離し、シナミルセサモールエーテルを19.6mg(収量:71%)を得た。
[Example 1]
Iodobenzene (27.6 mg, 0.14 mmol), compound represented by chemical formula (1) (20 mg, 0.10 mmol), palladium acetate (5.0 mg, 0.02 mmol, 20 mol%), triphenylphosphine (8. 57 mg, 0.033 mmol) and sodium carbonate (17.4 mg, 0.208 mmol) dissolved in 1 ml of dimethylformamide were purged with nitrogen and reacted at 100 ° C. with stirring for 64 hours. The resulting mixture containing the reaction product was cooled to room temperature, diluted with 10 ml of water, and extracted with ethyl acetate. After drying, the mixture was filtered, and the filtrate was concentrated under reduced pressure. The residue was separated by silica gel preparative TLC using a mixed solution of hexane / ethyl acetate (50: 1 (volume ratio)) to obtain 19.6 mg (yield: 71%) of cinnamyl sesamol ether.

[実施例2]
ヨードベンゼンの代わりにブロモベンゼン(163mg、1.079mmol)を用い、酢酸パラジウムを(12.5mg、0.06mmol、5.1mol%)用いた以外は、実施例1と同様にして、シナミルセサモールエーテルを7.7mg(収量:5.5%)を得た。
[Example 2]
Cinnamyl sesamol in the same manner as in Example 1 except that bromobenzene (163 mg, 1.079 mmol) was used instead of iodobenzene and palladium acetate (12.5 mg, 0.06 mmol, 5.1 mol%) was used. 7.7 mg (yield: 5.5%) of ether was obtained.

[実施例3]
セサモール(2.61g、18.89mmol)をトルエン(35ml)に溶解し、40℃に加熱した。この溶液に金属ナトリウム(490mg、21.3mmol)を加え、100℃〜120℃で6.5時間還流して反応させた。反応終了後、反応混合物を60℃まで冷却し、シナミルブロマイドを3.63ml(4.84g、24.54mmol)滴下した。その後に、反応混合物を、加熱還流して反応させた。反応終了後、反応混合物を室温まで冷却した後、ろ過し、濾液は、減圧下で、濃縮した。残渣を、ヘキサン・酢酸エチル混液(3:1(体積比))を用いてシリカゲルカラムクロマトグラフィーで分離し、化学式(VI)で表される化合物を3.53g(収量:74%)を得た。
[Example 3]
Sesamol (2.61 g, 18.89 mmol) was dissolved in toluene (35 ml) and heated to 40 ° C. Metal sodium (490 mg, 21.3 mmol) was added to this solution, and the mixture was reacted by refluxing at 100 to 120 ° C. for 6.5 hours. After completion of the reaction, the reaction mixture was cooled to 60 ° C., and 3.63 ml (4.84 g, 24.54 mmol) of cinnamyl bromide was added dropwise. Thereafter, the reaction mixture was heated to reflux for reaction. After completion of the reaction, the reaction mixture was cooled to room temperature and then filtered, and the filtrate was concentrated under reduced pressure. The residue was separated by silica gel column chromatography using a mixed solution of hexane / ethyl acetate (3: 1 (volume ratio)) to obtain 3.53 g (yield: 74%) of the compound represented by the chemical formula (VI). .

Rf=0.39;IR νmaxcm−1:3452,2893,1706,1487,1173,1039;H−NMR δ(CDCl):3.44(2H,d,J=6.1Hz),5.02(1H,br s),5.87(2H,s),6.31(1H,dt,J=6.1,15.9Hz),6.42(1H,s),6.63(1H,s),7.16−7.46(5H,m);13C−NMR δ(CDCl):33.9,98.5,100.9,109.5,117.3,126.1,127.2,127.9,128.4,131.2,136.9,141.3,146.5,148.3;FAB−MS m/z(%):254(M,100),151(29),117(26),91(26);HR−FAB−MS:found,m/z 254.0913;calcd. For C1614,254.0943 Rf = 0.39; IR v max cm −1 : 3452, 2893, 1706, 1487, 1173, 1039; 1 H-NMR δ (CDCl 3 ): 3.44 (2H, d, J = 6.1 Hz), 5.02 (1H, brs), 5.87 (2H, s), 6.31 (1H, dt, J = 6.1, 15.9 Hz), 6.42 (1H, s), 6.63 (1H, s), 7.16-7.46 (5H, m); 13 C-NMR δ (CDCl 3 ): 33.9, 98.5, 100.9, 109.5, 117.3, 126 1, 127.2, 127.9, 128.4, 131.2, 136.9, 141.3, 146.5, 148.3; FAB-MS m / z (%): 254 (M + , 100), 151 (29), 117 (26), 91 (26); HR-FAB-MS: fo und, m / z 254.0913; calcd. For C 16 H 14 O 3 , 254.0093

次に、得られた化学式(VI)で表される化合物(0.54g、2.13mmol)を、アセトン9mlに溶解する。この液に、炭酸カリウム(0.32mg、2.45mmol)およびヨウ化メチル0.40ml(0.61mg、6.39mmol)を加え、24時間加熱還流して反応させた。反応終了後、反応混合物を室温まで冷却した後、ろ過し、濾液は、減圧下で、濃縮した。残渣を、ヘキサン・酢酸エチル混液(10:1(体積比))を用いてシリカゲルカラムクロマトグラフィーで分離し、シナミルセサモールエーテルを0.51g(収量:89%)を得た。
Rf=0.51(ヘキサン・酢酸エチル混液(5:1(体積比)));IR νmaxcm−1:2890,1627,1484,1193,1039;H−NMR δ(CDCl):3.44(2H,d,J=6.3Hz),3.76(3H,s),3.76(3H,s),5.87(2H,s),6.31(1H,dt,J=6.3,15.9Hz),6.40(1H,d,J=15.9Hz),6.53(1H,s),6.69(1H,s),7.17(1H,t,J=7.3Hz),7.26(2H,t,J=7.3Hz),7.33(2H,d,J=7.3Hz);13C−NMR δ(CDCl):33.2,56.5,94.8,100.9,109.6,120.7,126.0,126.8,128.3,129.0,130.4,137.6,140.8,146.2,152.0;FAB−MS m/z(%):268(M,88),165(41),136(31),91(54);HR−FAB−MS:found,m/z 268.1102;calcd. For C1716,268.1099


Next, the obtained compound represented by the chemical formula (VI) (0.54 g, 2.13 mmol) is dissolved in 9 ml of acetone. To this solution, potassium carbonate (0.32 mg, 2.45 mmol) and 0.40 ml (0.61 mg, 6.39 mmol) of methyl iodide were added, and the mixture was reacted by heating under reflux for 24 hours. After completion of the reaction, the reaction mixture was cooled to room temperature and then filtered, and the filtrate was concentrated under reduced pressure. The residue was separated by silica gel column chromatography using a mixed solution of hexane / ethyl acetate (10: 1 (volume ratio)) to obtain 0.51 g (yield: 89%) of cinnamyl sesamol ether.
Rf = 0.51 (hexane / ethyl acetate mixed solution (5: 1 (volume ratio))); IR v max cm −1 : 2890, 1627, 1484, 1193, 1039; 1 H-NMR δ (CDCl 3 ): 3 .44 (2H, d, J = 6.3 Hz), 3.76 (3H, s), 3.76 (3H, s), 5.87 (2H, s), 6.31 (1H, dt, J = 6.3, 15.9 Hz), 6.40 (1H, d, J = 15.9 Hz), 6.53 (1H, s), 6.69 (1H, s), 7.17 (1H, t , J = 7.3 Hz), 7.26 (2H, t, J = 7.3 Hz), 7.33 (2H, d, J = 7.3 Hz); 13 C-NMR δ (CDCl 3 ): 33. 2,56.5,94.8,100.9,109.6,120.7,126.0,126.8,128.3,129 0,130.4,137.6,140.8,146.2,152.0; FAB-MS m / z (%): 268 (M +, 88), 165 (41), 136 (31), 91 (54); HR-FAB-MS: found, m / z 268.1102; calcd. For C 17 H 16 O 3 , 268.1099


Claims (2)

ハロゲン化ベンゼンと、下記化学式(I)で表される化合物とを反応させる、シナミルセサモールエーテルの製造方法。
Figure 2008013507

(式中、R1は、アルキル基、アルケニル基、アリール基を示す。)
A method for producing cinnamyl sesamol ether, comprising reacting a halogenated benzene with a compound represented by the following chemical formula (I).
Figure 2008013507

(In the formula, R1 represents an alkyl group, an alkenyl group, or an aryl group.)
シンナミルハロゲンとセサモールとを反応させる、シナミルセサモールエーテルの製造方法。
A method for producing cinnamyl sesamol ether, comprising reacting cinnamyl halogen and sesamol.
JP2006187601A 2006-07-07 2006-07-07 Method for producing cinnamyl sesamol ether Pending JP2008013507A (en)

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