Process for the preparation of diarylphosphino pyridines

Details Process for the preparation of diarylphosphino pyridines Process for the preparation of diarylphosphino pyridines

C - Chemistry, Metallurgy

07

F

C07F 9/58 (2006.01) C07F 9/28 (2006.01)

Patent

CA 2061129

T 1593 A B S T R A C T PROCESS FOR THE PREPARATION OF DIARYLPHOSPHINO PYRIDINES The invention relates to a process for the preparation of a diarylphosphino pyridine comprising the steps of: a) reacting a triaryl phosphine with about two equivalents of an alkali metal in a substantially aprotic solvent medium to form an alkali diarylphosphide and an alkali aryl; b) selectively eliminating the alkali aryl formed; c) reacting the alkali diarylphosphide with about one equivalent per halide group of an optionally substituted pyridyl halide; and d) separating the diarylphosphino pyridine formed. C13/T1593FF

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