Highly stereoselective Michael reduction/intramolecular Michael reaction cascade to synthesize trans-stereodiad comprising an all-carbon quaternary stereogenic center
作者:Tomohiro Fujii、Kohei Orimoto、Masahisa Nakada
DOI:10.1016/j.tetlet.2013.12.110
日期:2014.1
A highly stereoselective Michael reduction/intramolecular Michael reaction cascade is described. The cascade is initiated by the regioselective Michael reduction of an α-methylidene ester with L-Selectride. This is followed by the highly stereoselective intramolecular Michael reaction which efficiently constructs a six-membered carbocyclic ring with formation of the trans-stereodiad, composed of an
描述了高度立体选择性的迈克尔还原/分子内迈克尔反应级联。级联反应是由α-亚甲基酯与L-Selectride的区域选择性迈克尔还原反应引发的。随后是高度立体选择性的分子内迈克尔反应,该反应有效地构建了一个六元碳环,并形成了由全碳四元中心和三级立体中心组成的反式立体二烯键。立体选择性是通过在迈克尔受体中选择烯烃的几何形状来完美控制的。