Synthesis of 9,9-Disubstituted 9H-Pyrrolo[1,2-a]indoles by Hydriodic Acid-Catalyzed Cyclization of 1-[2-(1-Aryl(or methyl)ethenyl)phenyl]-1H-pyrroles

[摘要]：A novel method is reported for the synthesis of 9,9-disubstituted 9H-pyrrolo[1,2-a]indoles. Cyclization of 1-[2-(1-aryl(or methyl)ethenyl)phenyl]-1H-pyrroles, which can be easily prepared from 2-(1-aryl(or methyl)ethenyl)anilines, proceeds smoothly, in general, at 0 degrees in the presence of a catalytic (or an equimolar) amount of HI in MeCN to provide the desired products.

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