Abstract
An efficient four-component reaction to synthesize pyrrolo [2,1-a] isoquinolines from malononitrile, aromatic aldehydes, isoquinoline, and cyclohexyl isocyanide under solvent-free conditions is described. In a convenient, simple, and efficient one-pot procedure, the domino Knoevenagel-nucleophilic cycloaddition reaction affords excellent yields of products in less than 1 h.
Keywords: Pyrrolo [2, 1-a]isoquinoline, four-component reactions, isoquinoline, isocyanide, aromatic aldehydes, solvent-free synthesis.
Graphical Abstract
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