Studies on Chiral Organosulfur Compounds. III. Lewis Acid-Catalyzed Intramolecular Asymmetric Pericyclic Reactions of Chiral .ALPHA.-Acetyl and Methoxycarbonylvinylic Sulfoxides.
Intramolecular Lewis acid-catalyzed asymmetric hetero-Diels-Alder reactions with dienes bearing chiral sulfinyl groups
作者:Kunio Hiroi、Masayuki Umemura、Aki Fujisawa
DOI:10.1016/s0040-4039(00)60862-6
日期:1992.11
A chiral α-sulfinyl α,β-unsaturated ketone served as a chiral diene in intramolecular Lewis acid-catalyzed asymmetric cycloaddition reactions, giving hetero-Diels-Alderreaction products along in some cases with ene reaction products in high optical yields. The reaction pathways for Diels-Alder or ene reactions were readily controlled depending on the Lewis acids used.