Title:
エチニル化法
Document Type and Number:
Japanese Patent JP4780959
Kind Code:
B2
Abstract:
A process for the manufacture of an acetylenically unsaturated alcohol comprising reacting formaldehyde, an aldehyde or a ketone (a carbonyl compound) with acetylene in the presence of ammonia and an alkali metal hydroxide, the molar ratio of the alkali metal hydroxide to the carbonyl compound being less than 1:200. The reaction products, which depending on the starting carbonyl compound are propargyl alcohol or 1-monosubstituted or 1,1-disubstituted derivatives thereof, are of use as intermediates in the synthesis of many useful end products, inter alia in the field of vitamins and carotenoids.
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Inventors:
Bonrat, Werner
Cher, Peter El
Chum, Johannes
Zenha Ozern, Leto
Cher, Peter El
Chum, Johannes
Zenha Ozern, Leto
Application Number:
JP2004530118A
Publication Date:
September 28, 2011
Filing Date:
August 09, 2003
Export Citation:
Assignee:
DSM IP ASSETS B.V.
International Classes:
C07C29/38; C07B61/00; C07C29/42; C07C33/042; C07C33/048
Domestic Patent References:
| JP2000517326A | 2000-12-26 |
Attorney, Agent or Firm:
Yuichi Yamada
Masakazu Noda
Yoshinori Shimizu
Masakazu Noda
Yoshinori Shimizu