Process for the preparation of tertiary phosphines

Details Process for the preparation of tertiary phosphines Process for the preparation of tertiary phosphines

C - Chemistry, Metallurgy

07

F

C07F 9/547 (2006.01) C07F 9/50 (2006.01) C07F 9/58 (2006.01)

Patent

CA 2084738

HOE 91/H 031 Process for the preparation of tertiary phosphines Abstract A process is specified for the preparation of tertiary phosphines of the formula R'PR2 or R2P-[CH2]3-PR2 in which R is an aryl, pyridyl or arylsulfonic acid group and R' is an aryl, pyridyl, arylsulfonic acid or n-butyl group, which comprises reacting phosphines of the formula HnPR"3-n or H2P-[CH2]3-PH2 in which R" is hydrogen or an n-butyl, aryl or pyridyl group and n is 1 or 2 with a halogen compound of the formula X-R, in which R has the abovementioned meaning and X is fluorine, chlorine or bromine, in the presence of pow- dered potassium hydroxide and dimethyl sulfoxide and/or dimethoxyethane at temperatures between 0 and 100°C, at least 1 mol of potassium hydroxide being used per mole of halogen compound.

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