Synthesis and Some Reactions of Ethyl 2-[2-(Substituted Methyleneamino)anilino]cyclohepta[<i>b</i>]pyrrole-3-carboxylates
作者:Noritaka Abe、Akikazu Kakehi
DOI:10.1246/bcsj.65.1538
日期:1992.6
e (1) in excellent yields by treating 1 with benzaldehyde or 2-butenal in the presence of molecular sieves 4A, respectively. Further, the cyclization and cycloaddition reactions of the Schiff bases were investigated. Treatment of 2a with iron(III) chloride or Pd–C gave ethyl 2-(2-phenylbenzimidazol-1-yl)cyclohepta[b]pyrrole-3-carboxylate and 12H-5,13-dihydrocyclohepta[1′,2′ : 4,5]pyrrolo[2,3-b][1,