TAMARIND WATER-PROMOTED SYNTHESIS OF AMINO-SCHIFF’S BASES AND 1-ARYLMETHYL-2-ARYLBENZIMIDAZOLES UNDER GRINDING METHOD: A GREEN ALTERNATIVE APPROACH
Rammohan Pal*
ABSTRACT
An efficient and eco-friendly procedure was developed for the green
synthesis of various amino-Schiff’s bases and 1-arylmethyl-2-
arylbenzimidazoles in high yields by tamarind water-promoted
condensation of o-phenylenediamine with aromatic aldehydes under
grinding protocol. This method is experimentally simple, clean, high
yielding, and with reduced reaction times. The product is purified by
simple filtration followed by crystallisation with ethanol and drying
processes.
Keywords: Green synthesis, amino-Schiff’s bases, 1-arylmethyl-2- arylbenzimidazoles, grinding, tamarind water.
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