The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 28, 2006
Filed:
Oct. 09, 2002
Francis Djojo, Visp, CH;
Gareth J. Griffiths, Visp, CH;
Yves Guggisberg, Miège, CH;
Hidetaka Hiyoshi, Nakanogo, JP;
Francis Djojo, Visp, CH;
Gareth J. Griffiths, Visp, CH;
Yves Guggisberg, Miège, CH;
Hidetaka Hiyoshi, Nakanogo, JP;
Lonza Ltd., Basel, CH;
Ihara Chemical Industry Co., Ltd., Shizuoka, JP;
Abstract
A process for the preparation of 1-(pyrimidin-2-yl)propan-2-ones of general formula (I), in which R is in each case a C-alkyl group, a C-cycloalkyl group, an alkyl group or an aryl-C-alkyl group. For this, a malondiimidate of the general formula (II), in which R has the meaning given above, is reacted with diketene. The compounds which can be prepared according to the invention are intermediates for the synthesis of agrochemical active ingredients.