InCl 3-Assisted Synthesis of Pyrano[2,3-a ]carbazoles via Multicomponent Reaction
A facile, efficient, and environmentally friendly protocol for the synthesis of pyrano[2,3-a]carbazoles has been developed by one-pot multicomponent reaction of benzaldehyde/isatin with malononitrile and 1-hydroxycarbazoles in the presence of InCl3 as catalyst.