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:
Jul. 29, 2008
Filed:
Jun. 04, 2005
Andreas Meudt, Hofheim, DE;
Stefan Scherer, Griesheim, DE;
Claudius Boehm, Frankfurt, DE;
Archimica GmbH, Frankfurt am Main, DE;
Abstract
The invention relates to a method for producing the nitrites of formula: R—CN by reacting aldehyde oximes (RCN═N—OH) with cyclic alkylphosphonic anhydrides at a temperature ranging from −100 to +120° C., wherein Rrepresents H, a linear or branched C-Calkyl group, a C-Ccycloalkyl, alkenyl or an aryl or heteroaryl group. The cyclic phosphonic anhydride preferably used is a 2,4,6-substituted 1,3,5,2,4,6-trioxatriphosphinane-2,4,6-trioxide of formula (I), wherein R' independently represents allyl, aryl or open-chain or branched Cto Calkyl groups. Optionally, the reaction can be carried out in the presence of a tertiary amine base NR