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Exploration of heterocyclic compounds frombiowaste sugars: a Review

V.R.Remya, V.K.Abitha, Ajay Vasudeo Rane

The quest for renewable and sustainable production of heterocyclic compounds to be used in various industries like petroleum-based liquid fuels, polymers, pharmaceuticals, etc. continues to be an area of intensive research around the globe. Because the fossil raw materials have their foreseeable limits as they are costly, depleting and are irreplaceable. Hence, considering the economic and environmental aspects along with green chemistry context, sugars from bio waste material are widely into research to be used as the renewable feedstock in the synthesis of various heterocyclic compounds. The bio waste rich in sugars obtained by hydrolysis of sugars obtained from lignocellulosic biomass can be dehydrated or made to undergo treatment to release important heterocyclic compounds like furans, pyrans and thiophenes which are O-, N- and S- containing unsaturated heterocycles respectively. This report describes the various ways in which these heterocyclic compounds are being synthesized from sugars obtained from biowaste with or without biowaste pre-treatment. Thus, this type of synthesis plays a part in applying green chemistry principle of using renewable feedstock.