Patent ID: 7544842

Claim:
A process for forming a N,N′-((hydroxy) m -diaryl)-N,N′-((hydroxy) n -diaryl)-aryl-diamine compound, where m and n are each integers having a value from 0 to 2 inclusive and the value of m+n is at least 1, comprising (1) reacting a halogenated aryl compound with a diarylamine having at least one protected oxygen functional group in the presence of a catalyst to form an N,N,N′,N′-(tetraaryl)-aryl-diamine containing at least two protected oxygen functional groups; and (2) reacting the N,N,N′,N′-(tetraaryl)-aryl-diamine with a deprotecting agent to form a N,N′-((hydroxy) m -diaryl)-N,N′-((hydroxy) n -diaryl)-aryl-diamine; wherein the catalyst is palladium ligated with 2,4,6-trioxa-1,3,5,7-tetramethyl-8-phosphaadamantane.