New Diels-Alder Reactions of (E/Z)-2'-Methoxy-Substituted 3-Vinylindoles with Carbo- and Heterodienophiles: Regio- and Stereoselective Access to Annelated Indoles and Functionalized or Annelated Carbazoles

Article abstract of DOI:10.1021/jo00029a023

The (E/Z)-2'-methoxy-substituted 3-vinylindoles 1a,b react with some carbo- and azodienophiles to furnish new carbazoles and pyridazinoindoles.The conservation of the E and Z stereochemistry of 1 in these Diels-Alder reactions was investigated, and a mech