Chitosan functionalized by citric acid: an efficient catalyst for one-pot synthesis of 2,4-diamino-5H-[1]benzopyrano[2,3-b]pyridine-3-carbonitriles 5-(arylthio) or 5-[(arylmethyl)thio] substituted
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DOI: 10.1080/17415993.2016.1275633
Abstract: ABSTRACT Chitosan (CS) functionalized by citric acid has been used as an efficient catalyst for the preparation of 2,4-diamino-5H-[1]benzopyrano[2,3-b]pyridine-3-carbonitriles 5-(arylthio) or 5-[(arylmethyl)thio] substituted by a multicomponent reaction of salicylaldehydes, thiols and 2 equiv. of malononitrile… read more here.
Keywords: citric acid; chitosan functionalized; efficient catalyst; catalyst ... See more keywords