Patent ID: 7517985

Claim:
A process for producing triphenylboron-pyridine (TPBP) comprising generally spherical solid particles which comprises: (1) forming a suspension of solid TPBP particles in aqueous mother liquor in a vigorously agitated reaction zone, (2) separately feeding into said vigorously agitated reaction zone (i) a stream of pyridine and a (ii) stream comprising a solution of sodium hydroxide adduct of triphenylboron (TPBA) whereby the total concentration of TPBA in the combined feed streams is in the range of from 1 wt % to 6 wt %, and (3) simultaneously removing a product stream from said reaction zone at a rate whereby the original volume of said suspension in the reaction zone remains substantially constant, and the concentration of solid TPBP in the suspension is maintained at a value of less than 8 wt %.