Simple and efficient AuI-based catalyst for hydroamination of alkynes
摘要:
Hydroamination of terminal alkynes with anilines in the presence of (C6F5)(3)PAuNTf2 catalyst affords 2-aryliminoalkanes whose reduction in situ with sodium borohydride gives the corresponding secondary amines in high yields.
When combined with a chiral phosphate counteranion, a chiral diamine-ligated Ir(III) catalyst displayed excellent enantioselectivities in the asymmetric hydrogenation of a wide range of acyclic imines, affording chiral amines in up to 99% ee.