(<i>Z</i>)-3-<i>p</i>-Tolylsulfinylacrylonitrile as a Chiral Dienophile: Diels−Alder Reactions with Furan and Acyclic Dienes
作者:José L. García Ruano、Carlos Alemparte、Ana M. Martín Castro、Harry Adams、Jesús H. Rodríguez Ramos
DOI:10.1021/jo000963g
日期:2000.11.1
ile (1) as a chiral dienophile has been evaluated from its reactions with furan and acyclic dienes. Electrostatic interactions of the cyano group with the sulfinyl one restrict the conformational mobility around the C-S bond, thus controlling the pi-facial selectivity, which is almost complete in all cases, the approach of the diene from the less-hindered face of the dienophile (that bearing the lone