作者:José M. Concellón、Humberto Rodríguez-Solla、Elena G. Blanco、María A. Villa-García、Noemí Alvaredo、Santiago García-Granda、M. Rosario Díaz
DOI:10.1002/adsc.200900331
日期:2009.9
A convenient highly stereoselective synthesis of chloro- and bromocyclopropanamides from di- tri- or tetrasubstituted (E)- or (Z)-α,β-unsaturated amides with total or high stereoselectivity promoted by chromium dichloride or dibromide is described. The transformation of chlorocyclopropanamides into the corresponding ketones or amines is also reported. A mechanism to explain these transformations is
从二-三-或四取代的(氯-和bromocyclopropanamides的一种方便的高度立体选择性合成ë) -或(Ž)-α,β -与由二氯化铬或二溴化物促进总或高立体选择性不饱和酰胺进行说明。还报道了氯环丙烷酰胺向相应的酮或胺的转化。提出了一种解释这些转换的机制。