PROCESSES FOR THE PREPARATION OF N-HETEROARYL-N-ARYL-AMINES BY REACTING AN N-ARYL CARBAMIC ACID ESTER WITH A HALO-HETEROARYL AND ANALOGOUS PROCESSES
The present invention relates to processes for producing a diaryl amine compound of the formula (I); or a salt thereof, said process comprising the step of coupling a compound of formula (II) with an amine of formula (III) in the presence of an alkali metal salt or a transition metal catalyst, wherein: Ar1 and Ar2 are independently Q; wherein each Q is an aryl or heteroaryl ring system optionally fused to a saturated or unsaturated 5-8 membered ring having 0-4 heteroatoms; wherein Q is optionally substituted as defined in claim 1, wherein: X is a leaving group; and Y is -C(O)-O-Z; and Z is selected from C1-C6 aliphatic, benzyl, Fmoc, -SO2R' and Q, provided that Q is not substituted with X or alkyne; wherein R' is as defined in claim 1.