Patent ID: 7230137

Claim:
A process for preparing a cycloorganylphosphane of formula I (R 1 P) n I by reaction of a dihalo(organyl)phosphane of the formula R 1 PHal 2 , wherein R 1 is C 1 –C 12 alkyl; C 3 –C 12 cycloalkyl, aryl or heteroaryl, Hal is F, Cl, Br or I, and n is a number from 3 to 20, with a) activated zinc in an organic solvent, or with b) sodium in a non-polar organic solvent in the presence of tetramethylethylenediamine, wherein the ratio by volume of non-polar solvent to tetramethylethylenediamine is from 10:0.1 to 10:5.