One-Pot Palladium-Catalyzed Synthesis of Selectively Substituted Phenanthridines by Sequential Aryl-Aryl and Heck Couplings, Aza-Michael and Retro-Mannich Reactions
作者:Nicola Della Ca'、Elena Motti、Antonio Mega、Marta Catellani
DOI:10.1002/adsc.201000114
日期:——
A catalytic synthesis of selectivelysubstitutedphenanthridines is achieved through a reaction sequence involving palladium/norbornene‐catalyzed unsymmetrical aryl‐aryl and Heckcouplings followed by aza‐Michael and retro‐Mannich reactions. In spite of the many steps involved the method is very simple and allows the formation of selectivelysubstitutedphenanthridines under mild conditions in a straightforward
One‐pot Cascade Reaction for the Synthesis of Phenanthridines via Suzuki Coupling/C−H Oxidation/Aromatization
作者:Yi Zhang、Yuxin Ding、Rener Chen、Yongmin Ma
DOI:10.1002/adsc.202000949
日期:2020.12.22
A one‐pot cascade coupling/annulation reaction for the synthesis of phenanthridines has been developed from arylboronic acids and o‐bromo arylamides with DMSO as a carbon source. The desired phenanthridines were obtained in moderate to good yields by using simple procedure.