JPS56156240A - Preparation of 1-dimethylamino-3-methyl-2-butene - Google Patents
Preparation of 1-dimethylamino-3-methyl-2-buteneInfo
- 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
Links
Landscapes
- 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
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)
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 |
-
1980
- 1980-05-02 JP JP5895080A patent/JPS56156240A/en active Pending
Cited By (3)
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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