| abstract |
AN IMPROVED PROCESS FOR THE PREPARATION OF TRIARYLBORANES SUCH AS TRIPHENYLBORANE WHICH COMPRISES REACTING AN ARYL GRIGNARD REAGENT WITH A TRIALKYLBORATE, ISOLATING THE PRODUCT BY HYDROLYSIS, EXTRACTING THE RESULTANT MATERIAL WITH AN ORGANIC SOLVENT, WASHING, DRYING AND CONCERNTRATING THE EXTRACTANT TO RECOVER THE CRUDE PRODUCT, AND THEREAFTER TREATING THE CRUDE PRODUCT WITH AN ALIPHATIC HYDROCARBON SOLVENT WHICH DISSOLVES UNDEFIRED BY-PRODUCTS AND LEAVES SUBSTANTIALLY PURE TRIARYLBORANE. |