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:
Aug. 28, 2007
Filed:
Apr. 18, 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 the production of a.) aldehydes of formula (II): R—CHO and b.) aldehydes of formula (III): R—C(O)—Rby reacting a.) primary alcohols (RCH—OH) or b.) secondary alcohols (R—CH(OH)—R) with cyclic phosphonic acid anhydrides in the presence of dialkyl-, diaryl- and/or alkyl-aryl sulphonic oxides at a temperature in the region of between −100 to +120° C., whereby Rand/or Rrepresent H, a substituted linear or branched C-C-alkyl radical, a substituted C-Ccycloalkyl-, alkenyl-, aryl- or heteroaryl radical. A cyclic phosphonic acid anhydride is used, preferably, as a 2,4,6-substituted 1,3,5,2,4,6-trioxatriphosphinane of formula (I), wherein R' independently represents allyl, aryl or open-chained or branched C-C-alkyl-radicals. Optionally, the reaction can be carried out in the presence of a tertiary amine base NR