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Document Type and Number:
Japanese Patent JPH0128740
Kind Code:
B2
Abstract:
alpha -Ketocarboxylic acid N-acylamides of the formula R1-CO-CO-NH-CO-R2 in which R1 is an optionally substituted aliphatic radical with up to 12 carbon atoms, an optionally substituted cycloalkyl radical with 3 to 10 carbon atoms, an optionally substituted heterocyclic radical, and R2 is an optionally substituted aliphatic radical with up to 8 carbon atoms or an optionally substituted phenyl radical, are prepared by reacting an acyl cyanide of the formula R1-CO-CN with a carboxylic acid anhydride of the formula R2-CO-O-CO-R2 in the presence of a strong acid, and then adding water to the reaction mixture. The products can be used directly in the synthesis of known herbicides.

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Inventors:
GERUHARUTO BONZE
HAINTSU UURURITSUHI BURANKU
Application Number:
JP3144281A
Publication Date:
June 05, 1989
Filing Date:
March 06, 1981
Export Citation:
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Assignee:
BAYER AG
International Classes:
C07D253/06; B01J27/00; B01J27/02; C07B61/00; C07C51/06; C07C67/00; C07C231/00; C07C231/06; C07C235/72; C07C235/88; C07D253/075



 
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