ALUMINIUM SULPHATE IN PEG AS A GREEN RECYCLABLE HOMOGENEOUS CATALYTIC SYSTEM TO SYNTHESIS OF AMIDOALKYL NAPHTHOL
Bhata R. Chaudhari*
ABSTRACT
Aluminium sulphate as a catalyst in PEG as a reaction solvent is found to be an attractive, environmentally benign and highly efficient catalytic system for the one-pot multicomponent reaction of aromatic aldehyde, β-naphthol and amide to form the corresponding amidoalkyl naphthol. The procedure is simple, rapid and high yielding. Moreover, the catalyst exhibited a remarkable reactivity and is reusable in PEG-400 as a solvent. The Aluminium sulphate in PEG-400 can be reused upto four times without significant loss in yields and selectivity of the product. The remarkable features of this new one pot C-C and C-N bond forming reaction procedure are high conversations, operationally simple and eco-friendly and economically inexpensive method.
Keywords: Multicomponent reaction, amidoalkyl naphthol, ?-Naphthol, Aldehyde, Aluminium sulphate, PEG-400.
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