JPS56156240A - Preparation of 1-dimethylamino-3-methyl-2-butene - Google Patents

Preparation of 1-dimethylamino-3-methyl-2-butene

Info

Publication number
JPS56156240A
JPS56156240A JP5895080A JP5895080A JPS56156240A JP S56156240 A JPS56156240 A JP S56156240A JP 5895080 A JP5895080 A JP 5895080A JP 5895080 A JP5895080 A JP 5895080A JP S56156240 A JPS56156240 A JP S56156240A
Authority
JP
Japan
Prior art keywords
dimethylamine
catalyst
isoprene
total
mixture
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.)
Pending
Application number
JP5895080A
Other languages
Japanese (ja)
Inventor
Shuji Tsuchiya
Hiroshige Maruyama
Jun Uchida
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.)
Nissan Chemical Corp
Original Assignee
Nissan Chemical 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 Nissan Chemical Corp filed Critical Nissan Chemical Corp
Priority to JP5895080A priority Critical patent/JPS56156240A/en
Publication of JPS56156240A publication Critical patent/JPS56156240A/en
Pending legal-status Critical Current

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

Abstract

PURPOSE: To obtain the titled compound, a synthetic intermediate for perfumes, in high selectivity, by adding dimethylamine in small portions to a mixture of the total amount of isoprene with a catalyst while keeping the molar ratio of the starting material in the reaction mixture to the dimethylamine always high till the completion of the addition.
CONSTITUTION: Isoprene is reacted with dimethylamine in the presence of lithium dialkylamide as a catalyst while keeping the molar ratio of the starting material to the dimethylamine in the reaction mixture always high, by adding the dimethylamine in small portions to a mixture of the total isoprene with the catalyst. Preferably, the isoprene is used in a molar amount of 1.1W6 times that of the total dimetylamine, and the catalyst is used in a molar amount of 0.001W0.1 that of the raw material dimethylamine.
COPYRIGHT: (C)1981,JPO&Japio
JP5895080A 1980-05-02 1980-05-02 Preparation of 1-dimethylamino-3-methyl-2-butene Pending JPS56156240A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5895080A JPS56156240A (en) 1980-05-02 1980-05-02 Preparation of 1-dimethylamino-3-methyl-2-butene

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5895080A JPS56156240A (en) 1980-05-02 1980-05-02 Preparation of 1-dimethylamino-3-methyl-2-butene

Publications (1)

Publication Number Publication Date
JPS56156240A true JPS56156240A (en) 1981-12-02

Family

ID=13099101

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5895080A Pending JPS56156240A (en) 1980-05-02 1980-05-02 Preparation of 1-dimethylamino-3-methyl-2-butene

Country Status (1)

Country Link
JP (1) JPS56156240A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014038665A1 (en) * 2012-09-07 2014-03-13 高砂香料工業株式会社 Method for producing optically active 2,3-dihydrofarnesal

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014038665A1 (en) * 2012-09-07 2014-03-13 高砂香料工業株式会社 Method for producing optically active 2,3-dihydrofarnesal
JP2014051461A (en) * 2012-09-07 2014-03-20 Takasago Internatl Corp Method of manufacturing optical active 2,3-dihydrofarnesal
US9284246B2 (en) 2012-09-07 2016-03-15 Takasago International Corporation Method for producing optically active 2,3-dihydrofarnesal

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