Synthesis of N-Substituted Indole Derivatives via PIFA-Mediated Intramolecular Cyclization
摘要:
A variety of N- arylated and N- alkylated indole derivatives were synthesized by way of a phenyliodine bis( trifluoroacetate) ( PIFA)- mediated intramolecular cyclization. This novel method allows for the construction of an indole skeleton by joining the N- atom on the side chain to the benzene ring at the last synthetic step. Other novel pyrrole- fused aromatic compounds can also be achieved by this method.