Regioselective synthesis of spiro-cyclopropanated 1-aminopyrrol-2-ones by Bi(OTf)3-catalyzed one-pot ‘Mukaiyama–Michael addition/cyclization/ring-contraction’ reactions of 1,2-bis(trimethylsilyloxy)cyclobutene with 1,2-diaza-1,3-butadienes
作者:Orazio A. Attanasi、Gianfranco Favi、Gianluca Giorgi、Fabio Mantellini、Vahuni Karapetyan、Peter Langer
DOI:10.1016/j.tet.2009.04.018
日期:2009.7
Unknown spiro-cyclopropanated 1-aminopyrrol-2-ones are regioselectively prepared in high yields by Bi(OTf)3-catalyzed one-pot ‘Mukaiyama–Michael addition/cyclization/ring-contraction’ reactions of 1,2-bis(trimethylsilyloxy)cyclobutene with 1,2-diaza-1,3-butadienes at room temperature.
未知的螺环丙烷化的1-氨基吡咯-2-酮是由Bi(OTf)3催化的1,2-双(三甲基甲硅烷氧基)单锅“ Mukaiyama–Michael加成/环化/环缩合”反应以高产率进行区域选择性制备的室温下将环丁烯与1,2-二氮杂1,3-丁二烯一起使用。