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:
May. 10, 2011
Filed:
Jul. 05, 2006
Andreas Meudt, Hofheim, DE;
Sven Nerdinger, Kiefersfelden, DE;
Claudius Boehm, Frankfurt am Main, DE;
Andreas Meudt, Hofheim, DE;
Sven Nerdinger, Kiefersfelden, DE;
Claudius Boehm, Frankfurt am Main, DE;
Archimica GmbH, Frankfurt am Main, DE;
Abstract
Process for preparing nitriles by reacting N-alkylcarboxamides (RCO—NHR) or ammonium salts of carboxylic acids (RCOO—NHR) or carboxylic acids in the presence of alkylamines or ammonium salts (RCOOH+NHR, RCOOH+NHR), respectively, R being an arbitrarily substituted linear or branched C-C-alkyl radical, a C-Ccycloalkyl radical or an alkenyl, alkynyl or aryl or heteroaryl radical and Rbeing an arbitrary substituted, linear or branched C-Calkyl radical, a C-Ccycloalkyl radical or an alkenyl or alkynyl radical, with phosphonic anhydrides in the presence of an optional base in an organic solvent at a temperature in the range from −30 to 180° C. In advantageous embodiments, the phosphonic anhydride is a 2,4,6-substituted 1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide of the formula (I)