摘要:
Deoxophylloerythroetioporphyrin, an important porphyrin molecular fossil from oil shales and petroleum, and three homologs with six-, seven- or eight-membered exocyclic rings have been prepared by a one pot cyclization of b-bilenes with TFA-trimethyl orthoformate in dichloromethane. (C) 1998 Elsevier Science Ltd. All rights reserved.