Zwitterionic-type molten salt: An efficient mild organocatalyst for synthesis of 2-amidoalkyl and 2-carbamatoalkyl naphthols

A green, general, and efficient method has been developed for the synthesis of 2-amidoalkyl and 2-carbamatoalkyl naphthol derivatives through a one-pot three-component condensation of 2-naphthol, aldehydes and amide or carbamates in the presence of zwitterionic-type molten salt as mild organocatalyst under solvent-free conditions. (C) 2010 Elsevier B.V. All rights reserved.