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Transition Metal Complexes in Organic Synthesis, Part 63; Convergent Iron-Mediated Syntheses of the Furo[3,2-a]carbazole Alkaloid Furostifoline
31 December 2000 (online)
Two highly efficient routes to the furo[3,2-a]carbazole alkaloid furostifoline are described. Both syntheses use the iron-mediated arylamine cyclization as the key-step and lead to the natural product in seven and five steps, respectively.
benzofurans - carbazole alkaloids - tricarbonyliron complexes - electrophilic substitution - oxidative cyclization