A Facile Synthesis of Quino (2, 3-a) carbazoles

摘要

Condensation of 1-oxo-1, 2, 3, 4-tetrahydrocarbazoles 1a-e and o-aminoacetophenone 2 under acid catalysis afforded a new class of quino [2, 3-a] carbazoles 3a-e in good yields. A plausible mechanism for the product formation is also proposed.