JPH0338545A - Production of spiro(2-formyloxybornane-3,1'-cyclopentane) - Google Patents

Production of spiro(2-formyloxybornane-3,1'-cyclopentane)

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Publication number
JPH0338545A
JPH0338545A JP17383489A JP17383489A JPH0338545A JP H0338545 A JPH0338545 A JP H0338545A JP 17383489 A JP17383489 A JP 17383489A JP 17383489 A JP17383489 A JP 17383489A JP H0338545 A JPH0338545 A JP H0338545A
Authority
JP
Japan
Prior art keywords
formic acid
alcohol
spiro
mol
cyclopentane
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.)
Granted
Application number
JP17383489A
Other languages
Japanese (ja)
Other versions
JPH078826B2 (en
Inventor
Tomohito Kitsuki
智人 木附
Yoshiaki Fujikura
藤倉 芳明
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.)
Kao Corp
Original Assignee
Kao Corp
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 Kao Corp filed Critical Kao Corp
Priority to JP17383489A priority Critical patent/JPH078826B2/en
Publication of JPH0338545A publication Critical patent/JPH0338545A/en
Publication of JPH078826B2 publication Critical patent/JPH078826B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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

Abstract

PURPOSE:To efficiently obtain the subject substance having excellent woody and ambery aroma in high yield by reacting the corresponding alcohol with formic acid and sodium formate in the presence of a specific organic acid. CONSTITUTION:One mol compound expressed by formula I is reacted with 3.9-8.0mol formic acid and 0.9-1.5mol sodium formate in the presence of a >=3C organic acid (e.g. propionic acid) capable of dissolving the aforementioned three components at 20-90 deg.C to afford the compound expressed by formula II. The formic acid in a small number of mol can be used to provide a sufficient rate of reaction by the above-mentioned method and the organic acid is used in an amount of preferably 0.1-1.4mol based on 1mol alcohol.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、優れた木様及びアンバー様の香気を有するス
ピロ〔2−ホルミルオキシボルナン−3゜l′−シクロ
ペンタン〕の製造方法に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for producing spiro[2-formyloxybornane-3゜l'-cyclopentane] having an excellent woody and amber-like aroma. .

〔従来の技術〕[Conventional technology]

スピロ〔2−ホルミルオキシボルナン−3,l′−シク
ロペンタン〕は優れた木様、アンバー様の香気を有し、
香料素材として有用な化合物であり、その製造方法とし
ては水冷下で蟻酸と次式(n)で表わされるアルコール
とを攪拌する方法が知られている(特開昭64−994
4号)。
Spiro [2-formyloxybornane-3,l'-cyclopentane] has an excellent woody, amber-like aroma,
It is a compound useful as a fragrance material, and a known method for producing it is to stir formic acid and an alcohol represented by the following formula (n) under water cooling (Japanese Unexamined Patent Publication No. 64-994).
No. 4).

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

しかしながら、この方法は、原料アルコール(n)に対
してモル比で60倍もの大過剰の蟻酸を使用しても十分
に反応は進行せず、収率が極めて低くなる(43.8%
)という欠点があった。
However, in this method, even if formic acid is used in a large molar excess of 60 times with respect to the raw material alcohol (n), the reaction does not proceed sufficiently and the yield is extremely low (43.8%).
) had a drawback.

また、反応進行を速める為に反応温度を高くすると、原
料であるアルコール(n)の脱水又は、生成物からの!
l酸脱離による炭化水素生成という副反応が起こるため
、原料アルコール(If)の多大な損失を伴い、工業生
産上不利であるという問題を有していた。
In addition, if the reaction temperature is raised to speed up the reaction progress, the raw material alcohol (n) may be dehydrated or the product may be dehydrated!
Since a side reaction of hydrocarbon production due to the elimination of l acid occurs, there is a problem in that it is accompanied by a large loss of raw material alcohol (If) and is disadvantageous in terms of industrial production.

そこで、蟻酸の使用量が少なく、且つ反応速度を向上さ
せた、スピロ〔2−ホルミルオキシボルナン−3,1’
−シクロペンタン〕の製造方法の開発が望まれていた。
Therefore, spiro[2-formyloxybornane-3,1'
- cyclopentane] has been desired to be developed.

〔課題を解決するための手段〕[Means to solve the problem]

斯かる実状において、本発明者は上記課題を解決すべく
鋭意検討した結果、エステル化剤として蟻酸及び蟻酸す
l−IJウムを使用し、原料アルコール(■)、蟻酸及
び蟻酸す) IJウムを溶解する炭素数3以上の有機酸
の存在下でエステル化反応を行えば、反応温度を上げて
も原料アルコール(n)の脱水及び生成物の!l!1l
r1!脱離を抑制することができ、高収率でスピロ〔2
−ホルミルオキシボルナン−3,1′−シクロペンタン
〕が得られることを見出し、本発明を完成した。
Under such circumstances, the inventors of the present invention made extensive studies to solve the above problems, and as a result, used formic acid and IJium formic acid as the esterifying agent, and mixed raw alcohol (■), formic acid, and IJium formic acid. If the esterification reaction is carried out in the presence of a dissolved organic acid having 3 or more carbon atoms, the raw alcohol (n) can be dehydrated and the product can be removed even if the reaction temperature is raised! l! 1l
r1! Desorption can be suppressed and spiro[2] can be produced in high yield.
-formyloxybornane-3,1'-cyclopentane], and completed the present invention.

すなわち、本発明は式(n) で表わされるアルコールに、該アルコール(n)、蟻酸
及び蟻酸す・トリウムを溶解する炭素数3以上の有機酸
の存在下で蟻酸及び蟻酸す) Uラムを20〜90℃に
て反応させることを特徴とする次の式(1) で表わされるスピロ〔2−ホルミルオキシボルナン−3
,1′−シクロペンタン〕の製造方法を提供するもので
ある。
That is, the present invention involves adding formic acid and thorium formic acid to an alcohol represented by the formula (n) in the presence of an organic acid having 3 or more carbon atoms that dissolves the alcohol (n), formic acid, and thorium formic acid. Spiro[2-formyloxybornane-3
, 1'-cyclopentane].

本発明製造方法では、アルコール([1)のエステル化
剤としては蟻酸及び蟻酸ナトリウムの混合物を使用する
。ここで使用量は、アルコール1モルに対して、蟻酸は
3.9〜8.0モル、蟻酸ナトリウムは0.9〜1.5
モルが好ましい。
In the production method of the present invention, a mixture of formic acid and sodium formate is used as the esterifying agent for alcohol ([1)]. The amount used here is 3.9 to 8.0 mol of formic acid and 0.9 to 1.5 mol of sodium formate per 1 mol of alcohol.
Moles are preferred.

また、本発明に用いられる有機酸としては、アルコール
(■)、蟻酸及び蟻酸ナトリウムを溶解する、炭素数3
以上の有機酸であればいずれをも使用することができる
が、特にプロピオン酸を用いることが好ましい。有機酸
の使用量はアルコール(II)  1モルに対して0.
1〜1.4モルが好ましい。
In addition, the organic acids used in the present invention include alcohol (■), formic acid, and sodium formate-dissolving organic acids having 3 carbon atoms.
Although any of the above organic acids can be used, it is particularly preferable to use propionic acid. The amount of organic acid to be used is 0.00% per mole of alcohol (II).
1 to 1.4 mol is preferred.

本発明製造方法における反応温度は20〜90℃である
が、高温である程反応進行も速まるため、実用性の点で
より高温であることが好ましい。
The reaction temperature in the production method of the present invention is 20 to 90°C, but the higher the temperature, the faster the reaction progresses, so a higher temperature is preferred from the viewpoint of practicality.

〔発明の効果〕〔Effect of the invention〕

本発明製造方法によれば、アルコール(■)1モルに対
して、わずか3.9〜8.0モルの蟻酸により十分な反
応速度を得ることができ、高収率で、しかも効率よく、
香料素材として有用なスピロ〔2−ホルミルオキシボル
ナン−3,1′−シクロベンクン〕を製造することがで
きる。
According to the production method of the present invention, a sufficient reaction rate can be obtained with only 3.9 to 8.0 mol of formic acid per 1 mol of alcohol (■), and a high yield and efficient
Spiro[2-formyloxybornane-3,1'-cyclobencune] useful as a fragrance material can be produced.

〔実施例〕〔Example〕

次に実施例を挙げて、本発明を更に説明する。 Next, the present invention will be further explained with reference to Examples.

実施例1 蟻酸78g(1,7モル)、蟻酸ナトリウム20g (
OJモル)及びプロピオン酸9g(0,12モル〉から
なる混合溶液中にアルコール(If)61.5g(0,
3モル)を加え、90℃を保ちながら16時間攪拌を行
う。次いで室温まで冷却した後、水を加え分層する。有
機層を飽和炭酸水素す) IJウム水溶液で中和洗浄し
、さらに水洗を行う。溶媒を留去し、減圧下で分留する
ことにより、スビロ〔2−ホルミルオキシボルナン 3.1′ 一シク ロペンタン〕の純品を得た。
Example 1 Formic acid 78g (1.7 mol), sodium formate 20g (
Alcohol (If) 61.5g (0,
3 mol) and stirred for 16 hours while maintaining the temperature at 90°C. Then, after cooling to room temperature, water is added and the layers are separated. The organic layer is neutralized and washed with a saturated aqueous solution of hydrogen carbonate, and then washed with water. By distilling off the solvent and performing fractional distillation under reduced pressure, a pure product of Subiro [2-formyloxybornane 3.1'-monocyclopentane] was obtained.

収量 57.7g (収率82.7%)IR(液膜、c
+s−’) 1730 (シc−o ) 、 1160.1180 
(シc−、a)’ +1−NMR(CDCi、溶媒、 
TMS内部標準、δ)2.18〜1.22(複雑な多重
線、  (−CH□−1(−四< 、  01)) 1.08(−重線、 C)1.) 0.82(−重線、 CH3) 0.78(−重線、 CH,) 元素分析 分析値 C; 75.92%、 H; 10.44%計
算値 C; 76.23%、 H; 10.23%参考
例1 12)1) 蟻酸487 g (10,6モル)及びアルコール(I
I)  124 g (0,6モル)を40’Cにて攪
拌し、スピロ〔2−ホルミルオキシボルナン−3,1′
−シクロペンタン〕を得た。
Yield 57.7g (yield 82.7%) IR (liquid film, c
+s-') 1730 (shi c-o), 1160.1180
(c-, a)' +1-NMR (CDCi, solvent,
TMS internal standard, δ) 2.18-1.22 (complex multiplet, (-CH□-1(-4 < , 01)) 1.08 (-multiplet, C) 1.) 0.82( - Heavy line, CH3) 0.78 (- Heavy line, CH,) Elemental analysis analysis value C: 75.92%, H: 10.44% Calculated value C: 76.23%, H: 10.23% Reference Example 1 12) 1) 487 g (10.6 mol) of formic acid and alcohol (I
I) 124 g (0.6 mol) was stirred at 40'C and spiro[2-formyloxybornane-3,1'
-cyclopentane] was obtained.

試験例1 実施例1及び参考例1において反応開始後、経時的にサ
ンプリングを行い、ガスクロマトグラフ(カラムSf!
−30(20%)、2m)にて目的物と炭化水素(アル
コール(n)の脱水又は目的物からの蟻酸脱離物)の面
積百分率を測定し、収率を求めた。その結果を図1に示
す。
Test Example 1 In Example 1 and Reference Example 1, after the start of the reaction, sampling was performed over time, and a gas chromatograph (column Sf!
-30 (20%), 2m), the area percentage of the target product and hydrocarbon (dehydration of alcohol (n) or formic acid removed product from the target product) was measured to determine the yield. The results are shown in Figure 1.

図1より、実施例1では、目的物たるスピロ〔2−ホル
ミルオキシボルナン−3,1′−シクロペンクン〕が高
収率で生成しており、副生物である炭化水素の生成は抑
制されている。一方、参考例1の場合には、スピロ〔2
−ホルミルオキシボルナン−3,1′−シクロペンタン
〕の生成が実施例よりも低く、炭化水素の生成は多くな
っている。
From Figure 1, in Example 1, the target product spiro[2-formyloxybornane-3,1'-cyclopencune] was produced in high yield, and the production of hydrocarbons as by-products was suppressed. There is. On the other hand, in the case of Reference Example 1, Spiro [2
-formyloxybornane-3,1'-cyclopentane] was lower than in the example, and the production of hydrocarbons was higher.

このことより、反応条件として実施例1の方が極めて優
れていることがわかる。
This shows that Example 1 is extremely superior in terms of reaction conditions.

【図面の簡単な説明】[Brief explanation of drawings]

図1は試験例1における、反応時間と面積百分率から求
めた収率との関係を示す図面である。 以上
FIG. 1 is a drawing showing the relationship between reaction time and yield determined from area percentage in Test Example 1. that's all

Claims (1)

【特許請求の範囲】 1 式(II) ▲数式、化学式、表等があります▼(II) で表わされるアルコールに、該アルコール (II)、蟻酸及び蟻酸ナトリウムを溶解する炭素数3以
上の有機酸の存在下で蟻酸及び蟻酸ナトリウムを20〜
90℃にて反応させることを特徴とする次の式( I ) ▲数式、化学式、表等があります▼( I ) で表わされるスピロ〔2−ホルミルオキシポルナン−3
,1′−シクロペンタン〕の製造方法。 2 アルコール(II)1モルに対して、蟻酸3.9〜8
.0モル、蟻酸ナトリウム0.9〜1.5モルを反応さ
せることを特徴とする請求項1記載のスピロ〔2−ホル
ミルオキシポルナン−3,1′−シクロペンタン〕の製
造法法。 3 有機酸がプロピオン酸である請求項1又は請求項2
記載のスピロ〔2−ホルミルオキシポルナン−3,1′
−シクロペンタン〕の製造方法。
[Claims] 1. An organic acid with 3 or more carbon atoms that dissolves alcohol (II), formic acid, and sodium formate in an alcohol represented by formula (II) ▲There are mathematical formulas, chemical formulas, tables, etc.▼ (II) Formic acid and sodium formate in the presence of 20~
The spiro[2-formyloxypornan-3
, 1'-cyclopentane]. 2 Formic acid 3.9 to 8 per mol of alcohol (II)
.. The method for producing spiro[2-formyloxypornan-3,1'-cyclopentane] according to claim 1, characterized in that the reaction is performed with 0 mol of sodium formate and 0.9 to 1.5 mol of sodium formate. 3. Claim 1 or 2, wherein the organic acid is propionic acid.
Spiro[2-formyloxypornan-3,1'
- cyclopentane] manufacturing method.
JP17383489A 1989-07-05 1989-07-05 Process for producing spiro [2-formyloxybornane-3,1'-cyclopentane] Expired - Fee Related JPH078826B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17383489A JPH078826B2 (en) 1989-07-05 1989-07-05 Process for producing spiro [2-formyloxybornane-3,1'-cyclopentane]

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17383489A JPH078826B2 (en) 1989-07-05 1989-07-05 Process for producing spiro [2-formyloxybornane-3,1'-cyclopentane]

Publications (2)

Publication Number Publication Date
JPH0338545A true JPH0338545A (en) 1991-02-19
JPH078826B2 JPH078826B2 (en) 1995-02-01

Family

ID=15968022

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17383489A Expired - Fee Related JPH078826B2 (en) 1989-07-05 1989-07-05 Process for producing spiro [2-formyloxybornane-3,1'-cyclopentane]

Country Status (1)

Country Link
JP (1) JPH078826B2 (en)

Also Published As

Publication number Publication date
JPH078826B2 (en) 1995-02-01

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