JPS55133327A - Preparation of alpha,beta-unsaturated aldehyde - Google Patents

Preparation of alpha,beta-unsaturated aldehyde

Info

Publication number
JPS55133327A
JPS55133327A JP4100479A JP4100479A JPS55133327A JP S55133327 A JPS55133327 A JP S55133327A JP 4100479 A JP4100479 A JP 4100479A JP 4100479 A JP4100479 A JP 4100479A JP S55133327 A JPS55133327 A JP S55133327A
Authority
JP
Japan
Prior art keywords
ester
unsaturated aldehyde
alkyl
formula
beta
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
JP4100479A
Other languages
Japanese (ja)
Other versions
JPS6221772B2 (en
Inventor
Shoichi Kinoshita
Masao Aizawa
Kenichi Oaku
Takashi Hotsuta
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.)
Kawamura Institute of Chemical Research
DIC Corp
Original Assignee
Kawamura Institute of Chemical Research
Dainippon Ink and Chemicals Co Ltd
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 Kawamura Institute of Chemical Research, Dainippon Ink and Chemicals Co Ltd filed Critical Kawamura Institute of Chemical Research
Priority to JP4100479A priority Critical patent/JPS55133327A/en
Publication of JPS55133327A publication Critical patent/JPS55133327A/en
Publication of JPS6221772B2 publication Critical patent/JPS6221772B2/ja
Granted legal-status Critical Current

Links

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

Abstract

PURPOSE: To obtain the title compound useful as a perfume or its intermediate, or an intermediate for a fat-soluble vitamin, etc., by hydrolysis of an ester prepared readily by rearrangement of a tertiary ethynyl-carbinol ester in the specific coexisting solvent and the specific pH region.
CONSTITUTION: An ester of formula I (R1 is H or alkyl; R2 is cycloalkyl, cycloalkenyl, alkyl, or alkenyl; R1 and R2 are 5W6C membered ring; R3 is H; R4 is -OA'c; R3 and R4 may form a C-C bond; Ac and A'c are acyl residues of aliphatic or aromatic carboxylic acids) is hydrolyzed, in the presence of an alcohol, at pH5W 10 for methanol, or pH 6W13 for ethanol, n-propanol, isopropanol, or tertiary butanol, to obtain an α,β-unsaturated aldehyde of formula II, e.g. citral.
EFFECT: A high rate of reaction with little by-products.
COPYRIGHT: (C)1980,JPO&Japio
JP4100479A 1979-04-06 1979-04-06 Preparation of alpha,beta-unsaturated aldehyde Granted JPS55133327A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4100479A JPS55133327A (en) 1979-04-06 1979-04-06 Preparation of alpha,beta-unsaturated aldehyde

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4100479A JPS55133327A (en) 1979-04-06 1979-04-06 Preparation of alpha,beta-unsaturated aldehyde

Publications (2)

Publication Number Publication Date
JPS55133327A true JPS55133327A (en) 1980-10-17
JPS6221772B2 JPS6221772B2 (en) 1987-05-14

Family

ID=12596246

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4100479A Granted JPS55133327A (en) 1979-04-06 1979-04-06 Preparation of alpha,beta-unsaturated aldehyde

Country Status (1)

Country Link
JP (1) JPS55133327A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8268772B2 (en) * 2001-08-20 2012-09-18 Symrise Ag Depot preparations
JP2015537065A (en) * 2012-10-08 2015-12-24 ディーエスエム アイピー アセッツ ビー．ブイ． Flavor flavor compound (VI)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8268772B2 (en) * 2001-08-20 2012-09-18 Symrise Ag Depot preparations
JP2015537065A (en) * 2012-10-08 2015-12-24 ディーエスエム アイピー アセッツ ビー．ブイ． Flavor flavor compound (VI)

Also Published As

Publication number Publication date
JPS6221772B2 (en) 1987-05-14

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