Diels-alder reactions of 1-sulfinyldienes with an endocyclic double bond: The unexpected evolution of the n-methylmaleimide adducts.
作者:M.Carmen Carreño、M.Belén Cid、Françoise Colobert、José L. Garcia^Ruano、Guy Solladié
DOI:10.1016/0957-4166(94)80106-1
日期:1994.8
(R)-(1E,3E)-2-Cyclohexenyl-1-vinyl-p-tolylsulfoxide 1a and (R)-(1E, 3E)-N-methyl-3-[2-(p-tolylsulfinyl) vinyl]-1H-indole Ib reacted with N-methylmaleimide to give Diels-Alder adducts whose in situ evolution through a tandem sulfoxide-sulfenate rearrangement/dehydration/[4+2]-cycloaddition sequence afforded the all-cis substituted bicycle [2,2,2] octene 7 in a highly stereoselective manner.