Palladium-Catalyzed Direct Dehydrogenative Annulation of Ferrocenecarboxamides with Alkynes in Air
摘要:
A novel method to synthesize racemic ferrocene[1,2-c]pyridine-3(4H)-ones via Pd-catalyzed direct dehydrogenative annulations of ferrocene-carboxamides with internal alkynes in air has been developed. Both alkyl and aryl ferrocenecarboxamides can be applied as effective substrates.
An Rh‐catalyzed selectiveC−H bond activation of diaryl‐substituted anilides is described. In an attempt to achieve C−Hactivation of C‐aryl rings, we unexpectedly obtained an N‐aryl ring product under non‐coordinating anion conditions, whereas the C‐aryl ring product was obtained in the absence of a non‐coordinating anion. This methodology has proved to be an excellent means of tuning and adjusting