Studies of Diastereoselectivity in Diels−Alder Reactions of Enantiopure (S<i>S</i>)-2-(<i>p</i>-Tolylsulfinyl)-1,4-naphthoquinone and Chiral Racemic Acyclic Dienes
作者:M. Carmen Carreño、Susana García-Cerrada、Antonio Urbano、Claudio Di Vitta
DOI:10.1021/jo000210u
日期:2000.7.1
Enantiopure sulfinylnaphthoquinone (+)-5 reacted with racemic acyclic dienes 1a-f bearing a stereogenic allylic center, through a tandem cycloaddition/pyrolytic sulfoxide elimination, to afford optically enriched compounds 8a-f and 9a-f with good like/unlike selectivities (ca. 75:25) and good enantiomeric excesses (68-82%), arising from the partial kinetic resolution of the racemic dienes. The opposite