Verfahren zur Herstellung von Biphenylen- und Bisphenylenphosphiten

A process is provided for making 2,2 bisphenyl phosphites and 2,2 biphenyl phosphites. The process provides pure product without requiring a recrystallization step. The process involves reacting phoshorous trichloride with either (a) an aromatic diphenol selected from the group of bisphenyl and biphenyls or (b) a nonohydroxy hydrocarbon compound, to induce a first product, and then reacting the first product with the other of (a) and (b) in the presence of an amount of tri-n-alkylamine sufficient to neutralize and hydrochloric acid produced in the second reaction, and utiliizing an aromatic liquid hydrocarbon medium and a minimum amount to facilitate precipitation of the resultant aromatic phosphite.