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JPS5917094B2 - Method for producing cyclopentanone derivatives - Google Patents
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JPS5917094B2 - Method for producing cyclopentanone derivatives - Google Patents

Method for producing cyclopentanone derivatives

Info

Publication number
JPS5917094B2
JPS5917094B2 JP2266576A JP2266576A JPS5917094B2 JP S5917094 B2 JPS5917094 B2 JP S5917094B2 JP 2266576 A JP2266576 A JP 2266576A JP 2266576 A JP2266576 A JP 2266576A JP S5917094 B2 JPS5917094 B2 JP S5917094B2
Authority
JP
Japan
Prior art keywords
alkyl group
aryl group
formulas
hydrogen
group
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
JP2266576A
Other languages
Japanese (ja)
Other versions
JPS52106839A (en
Inventor
源一 土橋
克之 小倉
光男 山下
三千代 鈴木
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 JP2266576A priority Critical patent/JPS5917094B2/en
Publication of JPS52106839A publication Critical patent/JPS52106839A/en
Publication of JPS5917094B2 publication Critical patent/JPS5917094B2/en
Expired legal-status Critical Current

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

【発明の詳細な説明】 本発明は一般式 ″ R□工H−(1、 R” 5(式中、Rは水素、アルキル基、アリール基またはア
ルコキシ基であり、R1 は水素、アルキル基またはア
リール基である。
DETAILED DESCRIPTION OF THE INVENTION The present invention is based on the general formula "R□techH-(1, R"5 (wherein R is hydrogen, an alkyl group, an aryl group, or an alkoxy group, and R1 is hydrogen, an alkyl group, or It is an aryl group.

)で表わされるシクロペンタノン誘導体を製造する方法
に関するものである。式中アルキル基、アリール基、ア
ルコキシ0 基としては本発明の反応に直接関与しない
置換基を有する基も抱括するものである。前記一般式(
I)で表わされる化合物は脱水反応に附すことによつて
容易に相当するα・β一不飽和五員環ケトンに導くこと
ができる。
) The present invention relates to a method for producing a cyclopentanone derivative represented by: In the formula, the alkyl group, aryl group, and alkoxy group include groups having substituents that do not directly participate in the reaction of the present invention. The general formula (
The compound represented by I) can be easily converted into the corresponding α/β monounsaturated five-membered ring ketone by subjecting it to a dehydration reaction.

これらの5 化合物は医薬や香料等の製造に極めて重要
な原料物質となりうるもので、例えばプロスタグランジ
ン類の医薬〔A、F、にlugeetal、、J、Am
er。Chem、Soc、、11、9256(1972
)およびC、J、Sih、etal、、J、Amer、
Chem、Soc、、フ 旦1、865(1975)な
ど〕やジヤスモン等の香料〔G、BhchiandB、
Egger、J、Org。Chem、、36、2021
(1971)〕としての用途を挙げることができる。該
α・β一不飽和五員環ケトンの従来の製造方5 法とし
ては一般に五員環化合物を出発原料とするものと直鎖の
化合物を原料とするものとあり、例えば次の二方法が文
献に記載されている。
These 5 compounds can be extremely important raw materials for the production of medicines, fragrances, etc. For example, prostaglandin medicines [A, F, lugeetal, J, Am]
Er. Chem, Soc, 11, 9256 (1972
) and C, J, Sih, etal,, J, Amer,
Chem, Soc, 1, 865 (1975), etc.] and fragrances such as diasmon [G, BhchiandB,
Egger, J., Org. Chem,, 36, 2021
(1971)]. Conventional methods for producing the α/β monounsaturated five-membered ring ketone 5 Generally, there are two methods, one using a five-membered ring compound as a starting material and the other using a linear compound as a starting material.For example, the following two methods are used. Described in the literature.

(1)シクロペンタジエンを出発原料として、アルキル
化ののちこれにいわゆる一重項酸素を反応させる方法〔
G.J.Sihetal.、J.C.S.(2)アジピ
ン酸ジエチルにDieckmann縮合を適用して五員
環化合物を経てこれを該α・β一不飽和五員環ケトンに
導く方法〔L.NOvakandC.Szantay.
Synthesis、1974、353〕。
(1) A method in which cyclopentadiene is used as a starting material, and after alkylation, it is reacted with so-called singlet oxygen [
G. J. Sihetal. , J. C. S. (2) A method of applying Dieckmann condensation to diethyl adipate to form a five-membered ring compound and then leading to the α/β monounsaturated five-membered ring ketone [L. NovakandC. Szantay.
Synthesis, 1974, 353].

しかしながら(1)の方法は一重項酸素の反応が二種の
異性体の混合体を与えるので工業的に不利な方法である
。さらに(2)の方法は工程数が長く、また該α・β一
不飽和五員環ケトンの4−位に置換基を導入することが
困難である。本発明の方法は工業的に入手の容易な四員
環ケトンを出発原料とし、且つ4一位に各種の置換基の
導入が可能であることを特長とする画期的な方法である
However, method (1) is industrially disadvantageous because the reaction of singlet oxygen gives a mixture of two isomers. Furthermore, method (2) requires a long number of steps, and it is difficult to introduce a substituent into the 4-position of the α/β monounsaturated five-membered ring ketone. The method of the present invention is an epoch-making method characterized in that it uses an industrially easily available four-membered ring ketone as a starting material and allows the introduction of various substituents at the 41-position.

本発明の方法で原料として用いる一般式 (式中、Rは水素、アルキル基、アリール基またはアル
コキシ基であり、R1は水素、アルキル基またはアリー
ル基であり、R2はアルキル基またはアリール基である
The general formula used as a raw material in the method of the present invention (wherein R is hydrogen, an alkyl group, an aryl group, or an alkoxy group, R1 is hydrogen, an alkyl group, or an aryl group, and R2 is an alkyl group or an aryl group) .

)で表わされるシクロブタン誘導体は本発明者等が開発
した方法により容易に製造できる化合物である〔特開昭
4913119号参照〕。
The cyclobutane derivative represented by ) is a compound that can be easily produced by the method developed by the present inventors [see JP-A-4913119].

即ち、2一置換−1・3ジハロプロパンとホルムアルデ
ヒドジメチルメルカプタールS−オキシドにより容易に
合成できる3一置換シクロブタノン〔K.Ogura.
M.Yamashita,.M.Suzllkiand
G.TsuchihashilTetrahedrOn
LeTt.、3653(1974)〕とアルデヒドメル
カプタールS−オキシドのリチウム塩との反応によつて
好収率かつ高純度に製造できるものである。本発明の方
法は前記一般式()で表わされる化合物を鉱酸による分
解反応に附することを必須要件とするものである。
That is, 3-monosubstituted cyclobutanone [K. Ogura.
M. Yamashita,. M. Suzllkiand
G. TsuchihashilTetrahedrOn
LeTt. , 3653 (1974)] and a lithium salt of aldehyde mercaptal S-oxide, it can be produced in good yield and with high purity. The method of the present invention requires that the compound represented by the general formula () be subjected to a decomposition reaction with a mineral acid.

鉱酸としては塩酸、硫酸などが用いられる。好ましい鉱
酸は硫酸である。酸の使用量はいわゆる接触量で十分で
ある。本発明の実施に当つては溶媒は必らずしも必要と
しないが、所望ならばエーテル、テトラヒドロフラン、
ジオキサン、ベンゼン、塩化メチレン、クロロホルム等
の反応に直接関与しない溶媒を用いることができる。反
応温度は特別な加熱または冷却手段を要しない観点から
室温が好ましい。以下実施例により本発明を更に詳細に
説明する。実施例 13−ベンジルオキシ−1−(1′
−メチルスルフイニル一1′−メチルチオ−n−ペンチ
ル)−1一シクロブタノール699m9をエーテル30
m1にとかし、1N希硫酸2m1を加えて室温で20時
間攪拌した。
Hydrochloric acid, sulfuric acid, etc. are used as mineral acids. A preferred mineral acid is sulfuric acid. The amount of acid used is sufficient to be the so-called contact amount. Solvents are not necessarily required in the practice of this invention, but if desired, ether, tetrahydrofuran,
Solvents that do not directly participate in the reaction, such as dioxane, benzene, methylene chloride, and chloroform, can be used. The reaction temperature is preferably room temperature from the viewpoint of not requiring special heating or cooling means. The present invention will be explained in more detail with reference to Examples below. Example 13-benzyloxy-1-(1'
-Methylsulfinyl-1'-methylthio-n-pentyl)-1-cyclobutanol (699 m9) with ether (30 m)
ml, 2 ml of 1N dilute sulfuric acid was added, and the mixture was stirred at room temperature for 20 hours.

有機層を分離したのち水層を塩化メチレン(30m1×
3回)で抽出した。有機層をあわせて炭酸水素ナトリウ
ム一硫酸マグネシウムで乾燥したのち減圧濃縮した。残
留物をカラムクロマトグラフイ一(シリカゲル、酢酸エ
チル)で手早く分離することによつて4−ベンジルオキ
シ−2(n−ブチル)−2−ヒドロキシシクロペンタノ
ン272ηを淡黄色油状物質として得た。収率53%。
実施例 2 3〜ベンジル−1−〔メチルスルフイニル(メチルチオ
)メチル〕−1−シクロブタノール831ηをエーテル
34m1にとかし、9N希硫酸0.68m1を加えて室
温で40.5時間撹拌した。
After separating the organic layer, the aqueous layer was diluted with methylene chloride (30ml
3 times). The organic layers were combined, dried over sodium bicarbonate and magnesium monosulfate, and then concentrated under reduced pressure. The residue was quickly separated by column chromatography (silica gel, ethyl acetate) to obtain 272η of 4-benzyloxy-2(n-butyl)-2-hydroxycyclopentanone as a pale yellow oil. Yield 53%.
Example 2 831 η of 3-benzyl-1-[methylsulfinyl(methylthio)methyl]-1-cyclobutanol was dissolved in 34 ml of ether, 0.68 ml of 9N diluted sulfuric acid was added, and the mixture was stirred at room temperature for 40.5 hours.

炭酸水素ナトリウムで中和したのち硫酸マグネシウムを
加えて乾燥した。不溶物を濾別したのち濾液を減圧濃縮
した。残留物をカラムクロマトグラフイ一(シリカゲル
、ベンゼン、クロロホルムおよび酢酸エチル)で分離し
て4−ベンジル−2−ヒドロキシシクロペンタノン13
7Wfi1を無色油状物質として得た。収率25%o実
施例 3 3−ベンジル−1−(1′−メチルスルフイニルー1′
−メチルチオ−n−ペンチル)−1−シクロブタノール
873即をエーテル30m1にとかし、9N希硫酸0.
6m1を加えて室温で19時間攪拌した。
After neutralizing with sodium hydrogen carbonate, magnesium sulfate was added and dried. After insoluble matter was filtered off, the filtrate was concentrated under reduced pressure. The residue was separated by column chromatography (silica gel, benzene, chloroform and ethyl acetate) to give 4-benzyl-2-hydroxycyclopentanone 13
7Wfi1 was obtained as a colorless oil. Yield 25% o Example 3 3-benzyl-1-(1'-methylsulfinyl-1'
-Methylthio-n-pentyl)-1-cyclobutanol (873ml) was dissolved in 30ml of ether, and 0.0ml of 9N dilute sulfuric acid was dissolved.
6ml of the mixture was added and stirred at room temperature for 19 hours.

炭酸水素ナトリウムを加えて中和、さらに硫酸マグネシ
ウムを加えて乾燥したのち不溶物を濾別した。濾液を減
圧濃縮したのちカラムクロマトグラフイ一(シリカゲル
、ベンゼン)により分離して4−ベンジル−2−(n−
ブチル)−2−ヒドロキシシクロペンタノン332m9
(53%)を得た。としての計算値:246、1618
). このものは常法によりセミカルバゾン誘導体に導いた。
After neutralizing by adding sodium hydrogen carbonate and drying by adding magnesium sulfate, insoluble matter was filtered off. After concentrating the filtrate under reduced pressure, it was separated by column chromatography (silica gel, benzene) to give 4-benzyl-2-(n-
butyl)-2-hydroxycyclopentanone 332m9
(53%). Calculated value as: 246, 1618
). This product was converted into a semicarbazone derivative by a conventional method.

Claims (1)

【特許請求の範囲】 1 一般式 ▲数式、化学式、表等があります▼ で表わされるシクロブタン誘導体を鉱酸による分解反応
に附することを特徴とする、一般式▲数式、化学式、表
等があります▼ で表わされるシクロペンタノン誘導体の製造方法〔式中
、Rは水素、アルキル基、アリール基またはアルコキシ
基であり、R^1は水素、アルキル基またはアリール基
であり、R^2はアルキル基またはアリール基である。 〕。
[Claims] 1 General formula ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ There are general formulas ▲ Numerical formulas, chemical formulas, tables, etc. characterized in that the cyclobutane derivative represented by is subjected to a decomposition reaction with a mineral acid. ▼ Method for producing a cyclopentanone derivative represented by [wherein, R is hydrogen, an alkyl group, an aryl group, or an alkoxy group, R^1 is hydrogen, an alkyl group, or an aryl group, and R^2 is an alkyl group] or an aryl group. ].
JP2266576A 1976-03-04 1976-03-04 Method for producing cyclopentanone derivatives Expired JPS5917094B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2266576A JPS5917094B2 (en) 1976-03-04 1976-03-04 Method for producing cyclopentanone derivatives

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2266576A JPS5917094B2 (en) 1976-03-04 1976-03-04 Method for producing cyclopentanone derivatives

Publications (2)

Publication Number Publication Date
JPS52106839A JPS52106839A (en) 1977-09-07
JPS5917094B2 true JPS5917094B2 (en) 1984-04-19

Family

ID=12089134

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2266576A Expired JPS5917094B2 (en) 1976-03-04 1976-03-04 Method for producing cyclopentanone derivatives

Country Status (1)

Country Link
JP (1) JPS5917094B2 (en)

Also Published As

Publication number Publication date
JPS52106839A (en) 1977-09-07

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