The Lewis acid-catalyzed intramolecular asymmetric ene reaction using a chiral α-cyanovinylic sulfoxide as an enophile
作者:Kunio Hiroi、Masayuki Umemura
DOI:10.1016/s0040-4020(01)80539-1
日期:1993.2
chiral enophile in a Lewis acid-catalyzed intramolecular enereaction. Use of diethylaluminum chloride as a catalyst provided extremely high stereoselectivity in the enereaction. The stereochemistry of the enereaction products were determined by chemical correlation and the NMR spectral analysis. A mechanistic pathway for the asymmetricinduction is presented on the basis of the stereochemical results