Stereoselective Synthesis of g- and d- Sultams by Intramolecular Diels-Alder Reaction of Vinylsulfonamides Posses- sing an Acyclic or Carbocyclic 1,3-Diene Moiety
Synthesis of Allylamines fromAlkynes and Iminium Ions
作者:Herbert Mayr、Susanne Rehn、Armin R. Ofial
DOI:10.1055/s-2003-41028
日期:——
The iminium salt Bn2N+=CH2 SnCl5 - undergoesene reactions with inverse electron demand with alkynes and withthe triple bond of enynes to give benzylideneammonium ions in aprotic solvents.Their hydrolysis yields N-benzylallylaminesin good yields. Mannich reaction products, which are the main productsunder more nucleophilic reaction conditions, have not been detected.
Stereoselective Synthesis of g- and d- Sultams by Intramolecular Diels-Alder Reaction of Vinylsulfonamides Posses- sing an Acyclic or Carbocyclic 1,3-Diene Moiety
作者:Peter Metz、Victor O. Rogachev、Victor D. Filimonov、Roland Fröhlich、Olga Kataeva