NHC-catalyzed C–O or C–N bond formation: efficient approaches to α,β-unsaturated esters and amides
作者:Bo Zhang、Peng Feng、Yuxin Cui、Ning Jiao
DOI:10.1039/c2cc32862c
日期:——
Simple and efficient NHC-catalyzed transformations of bromoenal or α,β-dibromoenal into α,β-unsaturated esters or amides with high stereoselectivity through CâO or CâN bond formation have been demonstrated. The NHC-catalyzed processes occur under mild conditions. The ready availability of the starting materials, avoidance of external oxidants and the usefulness of the products all make the strategy attractive.
简单高效的NHC催化转化,通过C-O或C-N键形成,将溴代烯酸或α,β-二溴代烯酸高立体选择性地转化为α,β-不饱和酯或酰胺。NHC催化的过程在温和条件下进行。起始原料易于获得,避免使用外部氧化剂,以及产品的实用价值,都使这一策略具有吸引力。