Patent ID: 7547807
Filing Date: 2009-06-16
Classification: C07F

Abstract:
1. A process for preparing a quaternary phosphonium salt comprising reacting a trialkyl-, trialkenyl- or triarylphosphine with an optionally substituted monounsaturated or polyunsaturated aliphatic, cycloaliphatic aromatic-aliphatic alcohol having from 3 to 25 carbon atoms or its carboxylic acid esters or ethers in the presence of an acid, or by reacting a trialkyl, trialkenyl- or triarylphosphine with an optionally substituted aliphatic, cycloaliphatic or aromatic-aliphatic halide having from 3 to 25 carbon atoms, wherein the reaction is conducted in a ternary solvent mixture, and wherein the quaternary phosphonium salt is of general formula I where R R X is an anion equivalent of an organic or inorganic acid and the trialkyl-, trialkenyl- or triarylphosphine is of general formula II where R where R R Y is OH, Cl, Br, O(CO)R R R where R 1′ and R 4 have the meanings given above.