Process for the preparation of triarylboranes

Details Process for the preparation of triarylboranes Process for the preparation of triarylboranes

C - Chemistry, Metallurgy

07

F

260/614.7

C07F 5/02 (2006.01) C07F 5/04 (2006.01)

Patent

CA 1070330

ABSTRACT OF THE DISCLOSURE Preparation of triarylboranes, e.g., triphenyl- borane, useful as promotors in the hydrocyanation of pentene- nitrile using zerovalent nickel catalysts, is disclosed. The preparation comprises reacting an alkali metal, e.g., sodium; an organohalide, e.g., chlorobenzene and an orthoborate ester, e.g., triisopropylorthoborate in an inert organic sol- vent, recovering the borane by contacting the reaction product with water while maintaining the ratio of borane to hydrolysis products (e.g. borinic acid) at at least 13/1, distilling volatiles from the aqueous mixture and contacting the resul- tant material with acid to a pH not less than about 6 to form the borane.

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