Copper-Catalyzed Cross-Coupling Interrupted by an Opportunistic Smiles Rearrangement: An Efficient Domino Approach to Dibenzoxazepinones
作者:Matthew O. Kitching、Timothy E. Hurst、Victor Snieckus
DOI:10.1002/anie.201106786
日期:2012.3.19
Unexpected Smiles! An unusual and highly regioselective synthesis of dibenzoxazepinones by a domino sequence assisted by an unexpected Smiles rearrangement is reported. The process is effective on electronically differentiated phenols and shows a high tolerance to variation in the benzamide substituents. A plausible path for the reaction, supported by preliminary mechanistic data, is offered.
Metal-Free Synthesis of Dibenzoxazepinones via a One-Pot SNAr and Smiles Rearrangement Process: Orthogonality with Copper-Catalyzed Cyclizations
作者:Victor Snieckus、Timothy Hurst、Matthew Kitching、Lívia da Frota、Keller Guimarães、Michael Dalziel
DOI:10.1055/s-0034-1378839
日期:——
Reported is the transition-metal-free synthesis of substituted dibenzoxazepinones using a convergent domino SNAr-Smiles rearrangement-SNAr process. Substrate-scope investigations demonstrated the critical importance of ring electronic effects on the efficiency of the process. In addition, the orthogonality of this approach with transition-metal-catalyzed procedures was established.