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:
Oct. 21, 2008
Filed:
Jul. 09, 2004
Reinhard H. Sommerlade, Neuenburg am Rhein, DE;
Souâd Boulmaâz, Birsfelden, CH;
Jean-pierre Wolf, Maisprach, CH;
Jens Geier, Wuppertal, DE;
Hansjörg Grützmacher, Dielsdorf, DE;
Markus Scherer, Beromünster, CH;
Hartmut Schönberg, Kilchberg, CH;
Daniel Stein, Seelze, DE;
Peter Murer, Allschwil, CH;
Stephan Burkhardt, Gelterkinden, CH;
Reinhard H. Sommerlade, Neuenburg am Rhein, DE;
Souâd Boulmaâz, Birsfelden, CH;
Jean-Pierre Wolf, Maisprach, CH;
Jens Geier, Wuppertal, DE;
Hansjörg Grützmacher, Dielsdorf, DE;
Markus Scherer, Beromünster, CH;
Hartmut Schönberg, Kilchberg, CH;
Daniel Stein, Seelze, DE;
Peter Murer, Allschwil, CH;
Stephan Burkhardt, Gelterkinden, CH;
Ciba Specialty Chemicals Corporation, Tarrytown, NY (US);
Abstract
The present invention relates to a new, selective process for the preparation of mono- and bisacylphosphanes of formula (I) n and m are each independently of the other 1 or 2; R, if n=1, is e.g. phenyl R, if n=2, is e.g. C-Calkylene or phenylene; Ris e. g. C-Calkyl, phenyl or substituted phenyl; Ris e. g. C-Calkyl, by (1) reacting a phosphorous halide of formula IIa or a phosphorous halide oxide of formula (IIb) or a phosphorous halide sulfide of formula (IIc) with an alkali metal in a solvent in the presence of a proton source; (2) subsequent reaction with m acid halides of formula (III) An oxidation step may follow to obtain mono- and bisacylphosphane oxides or mono- and bisacylphosphane sulfides.