JPH0254814B2 - - Google Patents

Info

Publication number
JPH0254814B2
JPH0254814B2 JP59124562A JP12456284A JPH0254814B2 JP H0254814 B2 JPH0254814 B2 JP H0254814B2 JP 59124562 A JP59124562 A JP 59124562A JP 12456284 A JP12456284 A JP 12456284A JP H0254814 B2 JPH0254814 B2 JP H0254814B2
Authority
JP
Japan
Prior art keywords
methyl group
iron chloride
reaction
general formula
chlordiketone
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 - Lifetime
Application number
JP59124562A
Other languages
Japanese (ja)
Other versions
JPS615039A (en
Inventor
Tadashi Sato
Tomoko Oikawa
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.)
Shingijutsu Kaihatsu Jigyodan
Original Assignee
Shingijutsu Kaihatsu Jigyodan
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 Shingijutsu Kaihatsu Jigyodan filed Critical Shingijutsu Kaihatsu Jigyodan
Priority to JP59124562A priority Critical patent/JPS615039A/en
Publication of JPS615039A publication Critical patent/JPS615039A/en
Publication of JPH0254814B2 publication Critical patent/JPH0254814B2/ja
Granted legal-status Critical Current

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/50Improvements relating to the production of bulk chemicals
    • Y02P20/52Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

Landscapes

  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Description

【発明の詳細な説明】 本発明は新規な光反応によつて環状オレフイン
よりα−クロルジケトン化合物を製造する方法、
及び、この方法を利用して得られたα−クロルジ
ケトン化合物より昆虫フエロモンとして知られて
いるブレビコミンの合成法に関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for producing an α-chlorodiketone compound from a cyclic olefin by a novel photoreaction;
The present invention also relates to a method for synthesizing brevicomin, known as an insect pheromone, from an α-chlordiketone compound obtained using this method.

従来の、塩化鉄()の存在下環状オレフイン
を光酸素酸化させることにより、該オレフインの
置換様式によつて、中間体としてβ−クロルヒド
ロペルオキシドを経由して下記の三つの反応生成
物が生ずることが知られている。(A.Kohda、et.
al.、JOO、1983(42)425参照) また、上記の中間体であるβ−クロルヒドロペ
ルオキシドを一旦単離後、種々のXの存在下鉄
()イオン触媒下で分解させると、X置換を有
する生成物が得られることから次のような反応機
構が考えられた。
Conventional photooxygen oxidation of a cyclic olefin in the presence of iron chloride () produces the following three reaction products via β-chlorohydroperoxide as an intermediate, depending on the substitution mode of the olefin. It is known. (A.Kohda, et.
al., JOO, 1983 (42) 425) In addition, once the above intermediate β-chlorohydroperoxide is isolated, if it is decomposed under an iron () ion catalyst in the presence of various types of X, a product having an X substitution is obtained. A reaction mechanism was considered.

但し、XはBr、I、SON、CN、N3を表わす。 However, X represents Br, I, SON, CN, N3 .

しかしながら、前記の中間体を単離することな
く、同じ条件下でさらに光酸素酸化を行つたとこ
ろα−クロルジケトンが収率よく生成することを
見出し、本発明を完成するに至つた。
However, when photooxidation with oxygen was further performed under the same conditions without isolating the intermediate, it was discovered that α-chlorodiketone was produced in good yield, and the present invention was completed.

すなわち、本発明は一般式 R1はメチル基、R2はメチル基、又はエチル基、
nは1又は3を表わす で表わされる環状オレフイン化合物を塩化鉄で表
わされる環状オレフイン化合物を塩化鉄()の
存在下、ピリジン中でガラス(登録商標パイレツ
クス)透過光を少なくしても4時間照射して一般
(R1、R2及びnは前途のとおり) で表わされるα−クロルジケトン化合物を得るこ
とを特徴とするα−クロルジケトン化合物の製造
方法である。
That is, the present invention is based on the general formula R 1 is a methyl group, R 2 is a methyl group or an ethyl group,
n represents 1 or 3 A cyclic olefin compound represented by iron chloride was irradiated with glass (registered trademark Pyrex) in pyridine in the presence of iron chloride for 4 hours even if the transmitted light was reduced. general formula (R 1 , R 2 and n are as described above) This is a method for producing an α-chlorodiketone compound, which is characterized by obtaining an α-chlordiketone compound represented by the following.

しかして、本発明においてはこのように置換基
を有する環状オレフイン化合物を塩化鉄()の
存在下で長時間パイレツクス透過光を照射するこ
とによりα−クロルジケトンが得られるのである
が、この反応は原料オレフインの置換基及び環の
大きさを変えることにより広い範囲で標的化合物
の合成が可能なこと、その結果得られる生成物の
ケトン及びα−クロルケトン部分を選択的に変換
することにより有機合成反応として広く応用でき
る。
Therefore, in the present invention, α-chlordiketone is obtained by irradiating a cyclic olefin compound having a substituent with Pyrex transmitted light for a long time in the presence of iron chloride (), but this reaction It is possible to synthesize a wide range of target compounds by changing the substituents and ring size of the raw material olefin, and organic synthesis reactions can be achieved by selectively converting the ketone and α-chloroketone moieties of the resulting product. It can be widely applied as

この反応を利用した有機合成反応として昆虫フ
エロモンとして知られているブレビコミンの選択
的合成法があげられる。
An example of an organic synthesis reaction utilizing this reaction is a method for selectively synthesizing brevicomin, which is known as an insect pheromone.

すなわち、従来のブレビコミンの合成法として
はシスまたはトランスオレフインのエポキシ化
(例えばJ.Org.Chem.、42 2380(1977)参照)或
はC6、C7炭素の立体選択的C−C結合生成反応
(例えばChem.Lett.、1983 93参照)を利用する
方法等があるが後者は前者に比して特殊な試薬を
必要とするなどの欠点があり、他方、前者の方法
ではエナンチオ選択的な合成が極めて困難である
等の欠点があつた。
That is, conventional methods for synthesizing brevicomine include epoxidation of cis or trans olefin (see, for example, J.Org.Chem., 42 2380 (1977)) or stereoselective C-C bond formation at C6 and C7 carbons. Although there are methods that utilize reactions (see, for example, Chem. Lett., 1983 93), the latter method has disadvantages such as requiring special reagents compared to the former method. It had drawbacks such as extremely difficult synthesis.

ところが先に記載した新規な光化学反応を利用
することにより極めて容易に且つ選択的にexo−
ブレビコミンの合成が可能となつた。
However, by using the novel photochemical reaction described above, exo-
It became possible to synthesize brevicomine.

すなわち、exo−ブレビコミンの合成は、次の
とおりである。
That is, the synthesis of exo-brevicomine is as follows.

構造式 を有する1−エチル−6−メチル−1−シクロヘ
キセンを塩化鉄()の存在下、光酸素酸化させ
ることにより、構造式 で表わされる6−クロロ−2、7−ノナジオンを
得しかる後該化合物を環元して6−クロル−7−
ヒドロキシ−2−ノナノンとし、これをエポキシ
化後酸処理することを特徴とするブレビコミンの
合成法である。
Structural formula By photooxidizing 1-ethyl-6-methyl-1-cyclohexene with the structural formula in the presence of iron chloride (), the structural formula 6-Chloro-2,7-nonadione represented by
This is a method for synthesizing brevicomine, which is characterized by epoxidizing hydroxy-2-nonanone and then treating it with an acid.

しかして、本発明は次のような反応経路によ
る。
Therefore, the present invention is based on the following reaction route.

以下、実施例をもつて本発明を説明する。 The present invention will be explained below with reference to Examples.

実施例 1 1,12−ジメチルシクロドデセン776mgおよび
塩化鉄()1.08gを40mlのピリジンにとかし、
パイレツクス管中酸素ガスを通しながら450W高
圧水銀灯を4時間照射する。希塩酸で中和しクロ
ロホルムで抽出する。抽出液を短いフロリジルカ
ラムを通した後溶媒を除去することにより精製す
る。
Example 1 776 mg of 1,12-dimethylcyclododecene and 1.08 g of iron chloride () were dissolved in 40 ml of pyridine,
Irradiate with a 450W high-pressure mercury lamp for 4 hours while passing oxygen gas through the Pyrex tube. Neutralize with dilute hydrochloric acid and extract with chloroform. The extract is purified by passing it through a short Florisil column and then removing the solvent.

収率64% 参考例 1 1−エチル−6−メチル−1−シクロヘキセン
496mg及び塩化鉄()1.08gを40mlのピリジン
にとかし、パイレツクス管中酸素ガスを通しなが
ら、450W高圧水銀灯を4時間照射する。希塩酸
で中和しクロロホルムで抽出する。抽出液から少
量の鉄化合物を除くため、短いフロリジルカラム
を通した後溶媒を除くため、短いフロリジルカラ
ムを通した後溶媒を除去する。収率79%bp.95〜
98℃/1.2mmHg。得られたα−クロルジケトン
500mgをn−ブタノール15mlにとかし、−50℃で水
素化ホウ素ナトリウム100mgを加えて45分間かく
はんする。溶液を希塩酸で酸性にし、エーテル抽
出し食塩水で洗滌した後無水硫酸ナトリウムによ
り乾燥する。残渣をシリガルカラムにより精製
し、6−クロル−7−ヒドロキシ−2−ノナノン
380mgが得られた。収率76%。このもの142mgを
133mgのKOHを含む7mlのメタノールにとかし15
分間還流する。水を加えジクロルメタンで抽出
し、抽出液を無水硫酸ナトリウムで乾燥した後溶
媒を除去すると、6,7−エポキシ−2−ノナノ
ンが得られる。これを単離することなく、0.9ml
アセトン及び0.9ml水の混合溶媒にとかし、硫酸
245mgを氷冷下加え、室温で1時間攪拌する。反
応液を重曹水で中和しエーテル抽出する。エーテ
ル溶液を無水硫酸ナトリウムで乾燥した後エーテ
ルを除去するとブレビコミン99mgが得られた。こ
れはGC−MS、NMRによりエキソ:エンド=
93:7であることがわかつた。1−エチル−6−
メチルシクロヘキセンよりの通算収率は51%であ
つた。
Yield 64% Reference example 1 1-ethyl-6-methyl-1-cyclohexene
Dissolve 496 mg and 1.08 g of iron chloride in 40 ml of pyridine, and irradiate with a 450 W high-pressure mercury lamp for 4 hours while passing oxygen gas through a Pyrex tube. Neutralize with dilute hydrochloric acid and extract with chloroform. To remove a small amount of iron compounds from the extract, the extract is passed through a short Florisil column and the solvent is removed after passing through a short Florisil column. Yield 79% bp.95~
98℃/1.2mmHg. Obtained α-chlordiketone
Dissolve 500 mg in 15 ml of n-butanol, add 100 mg of sodium borohydride at -50°C, and stir for 45 minutes. The solution is made acidic with dilute hydrochloric acid, extracted with ether, washed with brine, and dried over anhydrous sodium sulfate. The residue was purified using a siligal column to obtain 6-chloro-7-hydroxy-2-nonanone.
380mg was obtained. Yield 76%. 142mg of this stuff
Dissolve in 7 ml methanol containing 133 mg KOH15
Reflux for minutes. Water is added and extracted with dichloromethane, the extract is dried over anhydrous sodium sulfate, and the solvent is removed to obtain 6,7-epoxy-2-nonanone. Without isolating this, 0.9ml
Dissolve in a mixed solvent of acetone and 0.9ml water, add sulfuric acid
Add 245 mg under ice cooling and stir at room temperature for 1 hour. The reaction solution was neutralized with aqueous sodium bicarbonate and extracted with ether. After drying the ether solution over anhydrous sodium sulfate and removing the ether, 99 mg of brevicomine was obtained. This was determined by GC-MS and NMR as exo:endo=
It turned out to be 93:7. 1-ethyl-6-
The total yield from methylcyclohexene was 51%.

Claims (1)

【特許請求の範囲】 1 一般式 R1はメチル基、R2はメチル基又はエチル基を
表し、nは1又は3である で表わされる環状オレフイン化合物を塩化鉄
()の存在下、ピリジン中でガラス透過光を少
なくとも4時間照射して一般式 (R1、R2及びnは前述のとおり) で表わされるα−クロルジケトン化合物を得るこ
とを特徴とするα−クロルジケトン化合物の製造
方法。
[Claims] 1. General formula R 1 is a methyl group, R 2 is a methyl group or an ethyl group, and n is 1 or 3. A cyclic olefin compound represented by R 1 is a methyl group, R 2 is a methyl group or an ethyl group, and n is irradiated with glass transmitted light for at least 4 hours in pyridine in the presence of iron chloride (). general formula (R 1 , R 2 and n are as described above) A method for producing an α-chlorodiketone compound, which comprises obtaining an α-chlordiketone compound represented by the following.
JP59124562A 1984-06-19 1984-06-19 Preparation of alpha-chlorodiketone compound by photochemical reaction and synthesis of brevicomin from obtained alpha-chlorodiketone Granted JPS615039A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59124562A JPS615039A (en) 1984-06-19 1984-06-19 Preparation of alpha-chlorodiketone compound by photochemical reaction and synthesis of brevicomin from obtained alpha-chlorodiketone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59124562A JPS615039A (en) 1984-06-19 1984-06-19 Preparation of alpha-chlorodiketone compound by photochemical reaction and synthesis of brevicomin from obtained alpha-chlorodiketone

Publications (2)

Publication Number Publication Date
JPS615039A JPS615039A (en) 1986-01-10
JPH0254814B2 true JPH0254814B2 (en) 1990-11-22

Family

ID=14888548

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59124562A Granted JPS615039A (en) 1984-06-19 1984-06-19 Preparation of alpha-chlorodiketone compound by photochemical reaction and synthesis of brevicomin from obtained alpha-chlorodiketone

Country Status (1)

Country Link
JP (1) JPS615039A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017104798A1 (en) * 2015-12-18 2017-06-22 株式会社エースネット Method for producing oxidation reaction product of hydrocarbon or derivative thereof, and method for producing oxidation reaction product of olefin
CN114652757B (en) * 2020-12-23 2024-03-01 宣威市龙津生物科技有限责任公司 Method for improving scutellarin content in erigeron breviscapus medicinal material

Also Published As

Publication number Publication date
JPS615039A (en) 1986-01-10

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