First Synthesis of 2-Vinylindole and itsdiels-Alder Reactions with CC-Dienophiles
作者:Ulf Pindur、Manfred Eitel
DOI:10.1002/hlca.19880710517
日期:1988.8.10
of an intramolecular Wittig process, 2-vinylindole (2) was prepared. The indole 2 functions as a heterocyclic, donor-activated 1,3-diene and undergoes [4+2] cycloadditionreactions with dimethylacetylenedicarboxylate, N-phenylmaleimide, and p-benzoquinone leading to the novel carbazole dervatives 3, 4, 5c, 6 and 7 respectively. The reaction of 2 with acceptor (A)-Substituted dienophiles (e.g.) ACHCH2