Title:
ピリジルカルボン酸アミドおよびエステルを製造する方法
Document Type and Number:
Japanese Patent JP2009514832
Kind Code:
A
Abstract:
The invention relates to a process for the preparation of pyridylcarboxylic amides and esters I, Formula (I) wherein Hal, X and R1 have the meanings given in claim 1, which comprises the following steps: (a) heating a mixture consisting essentially of trichloromethylpyridine II, Formula (II), wherein Hal has the meaning given, and 1.0 to 1.5 equivalents of concentrated sulfuric acid, characterized in that the trichloromethylpyridine II in a liquid form is added to the concentrated sulfuric acid at a temperature from 110° C. to 160° C.; and (b) reacting the intermediate product obtained in step (a) with an amine or alcohol III, HXR1, wherein X and R1 have the meaning given, optionally in the presence of a solvent and/or a base.
Inventors:
Blink, Monica
Nell, Marx
Wefers, Jan Hendrik
Nell, Marx
Wefers, Jan Hendrik
Application Number:
JP2008538340A
Publication Date:
April 09, 2009
Filing Date:
October 26, 2006
Export Citation:
Assignee:
BASF SE
International Classes:
C07D213/79; C07D213/81; C07B61/00
Domestic Patent References:
| JPH07258147A | 1995-10-09 | |||
| JPH04217959A | 1992-08-07 | |||
| JPH11130752A | 1999-05-18 | |||
| JPS5461137A | 1979-05-17 | |||
| JPH07258147A | 1995-10-09 | |||
| JPH04217959A | 1992-08-07 |
Attorney, Agent or Firm:
Yusuke Hiraki
Ishii Teiji
Satoshi Fujita
Eiichi Arai
Ishii Teiji
Satoshi Fujita
Eiichi Arai