Patent ID: 8034950

Claim:
A process for producing a diaryl amine compound of the formula: or a salt thereof, said process comprising the steps of (1) coupling a compound of formula 21 with an amine of formula 22 in the presence of a transition metal catalyst: and (2) removing radical Y from the resultant compound in the presence of an acid; wherein: R 3 is selected from aliphatic, aryl, or aryl substituted with aliphatic, aryl, nitro, CN, CO 2 R′, CO 2 N(R′) 2 , OR′, NCO 2 R′, NR′C(O)N(R′) 2 , and OC(O)N(R′) 2 ; provided that R 3 is not t-butyl; and G 1 , G 2 , G 3 , G 4 , and G 5 are independently selected from hydrogen, aliphatic, aryl, substituted aryl, nitro, CN, OR′, CO 2 R′, CO 2 N(R′) 2 , NR′CO 2 R′, NR′C(O)N(R′) 2 , OC(O)N(R′) 2 , F, Cl, Br, I, O-Tos, O-Ms, OSO 2 R′, and OC(O)R′.