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:
Jun. 12, 2007
Filed:
Nov. 24, 2003
Hansjörg Grützmacher, Dielsdorf, CH;
Jens Geier, Tsukuba, JP;
Hartmut Schönberg, Kilchberg, CH;
Markus Scherer, Beromünster, CH;
Daniel Stein, Seelze, DE;
Souâd Boulmaâz, Birsfelden, CH;
Hansjörg Grützmacher, Dielsdorf, CH;
Jens Geier, Tsukuba, JP;
Hartmut Schönberg, Kilchberg, CH;
Markus Scherer, Beromünster, CH;
Daniel Stein, Seelze, DE;
Souâd Boulmaâz, Birsfelden, CH;
Ciba Specialty Chemicals Corp., Tarrytown, NY (US);
Abstract
The invention relates to a process for the preparation of cycloorganylphosphanes of formula 1 (RP)by reaction of dihalo(organyl)phosphanes of formula RPHalwith: a) activated zinc in an organic solvent, or with: b) an alkali metal or alkaline earth metal in a non-polar organic solvent in the presence of an activator, wherein Ris C–Calkyl; C–Ccycloalkyl, aryl or heteroaryl, Hal is F, Cl, Br or I, and n is a number from 3 to 20. The invention relates also to novel di(alkali metal/alkaline earth metal) oligophosphanediides and to the use thereof in the preparation of organophosphorus compounds.