Main Article Content
Abstract
Base catalyzed green protocol has been developed for one-pot three-component
condensation of aldehydes, malononitrile and diketo compounds for the synthesis of biologically
important moiety tetrahydrobenzo[b]pyran derivatives. The reaction affords moderate to
excellent yield of products. Benzopyrans are basic backbone of various types of polyphenols and
widely found in natural alkaloids, tocopherols, flavonoids, and anthocyanins. These compounds
are
also
industrially
important
as
cosmetics,
pigments
and potentially
biodegradable
agrochemicals.