Stereoselective cyclization of (E)- and (Z)-5,6-dimethyl-8-trimethylsilyl-6-octenals
作者:Kazuhiko Asao、Hideo Iio、Takashi Tokoroyama
DOI:10.1016/s0040-4039(01)93905-x
日期:1989.1
The diastereoselectivities in the acid-mediated cyclization of (E)- and (Z)-5,6-dimethyl-8-trimethylsilyl-6-octenals, both stereoselectively synthesized, were investigated. Excellent preference for the formation ofcis-dimethylcyclohexanols was realized, specially in the case of the (Z)-substrate where they formed exclusively. The selectivity in the hydroxyl group configuration varied in relation with
研究了在酸介导的(E)-和(Z)-5,6-二甲基-8-三甲基甲硅烷基-6-辛烯基的酸介导环化中的非对映选择性。特别是在(Z)-底物仅形成顺式-二甲基环己醇的情况下,实现了对顺式-二甲基环己醇的形成的极好的选择。羟基构型的选择性随底物和所用酸试剂的双键几何形状变化。