Abstract
Synthesis of heterocyclic scaffolds by microwave irradiation is a green and clean process. The
organic transformation induced by microwave irradiation, as an alternative source of energy, has been of
great interest due to the high efficiency, yield, and short reaction time with minimum by-product production.
Heterocyclic compounds, an important skeleton for pharmaceuticals, are the most privileged and
prevalent class of organic chemistry. They have enormous medicinal value and pharmaceutical potential.
This review demonstrates the effectiveness of microwave heating for the synthesis of heterocyclic compounds.
The eco-friendly microwave-induced synthesis of five-membered heterocyclic systems covering
recent literature is highlighted in this article.
Keywords:
Heterocyclic, microwave, irradiation, pharmaceutical, eco-friendly, five-membered, ring.
Graphical Abstract
[15]
Anastas, P.T.; Warner, J. Green Chemistry. Theory and Practice; Oxford University Press: Oxford, 1998.
[44]
Miles, K.C.; Mays, S.M.; Southerland, B.K.; Auvil, T.J.; Ketcha, D.M. The Clauson-Kaas pyrrole synthesis under microwave irradiation. Arkivoc, 2009, 14, 181-190.
[56]
Regan, A.C.; Katritzky, A.R.; Ramsden, C.A.; Scriven, E.F.V.; Taylor, R.J.K. Bicyclic 5-6 systems with one bridgehead (ring junction) nitrogen atom: Two extra heteroatoms 1:1. In: Comprehensive Heterocyclic Chemistry III; Elsevier: Oxford, UK, 2008; 11, pp. 551-587.
[58]
Sarmiento, J.T.; Portilla, J. Current advances in chemosensors diazoles-based for CN- and F- detection. Curr. Org. Synth., 2022, 61-79.
[62]
Katritzky, A.R.; Ramsden, C.A.; Scriven, E.F.V.; Taylor, R.J.K. Comprehensive Heterocyclic Chemistry III, 14th ed; Pergamon: Oxford, U.K, 2008.
[96]
Thomsen, I.; Pedersen, U.; Rasmussen, P.B.; Yde, B.; Andersen, T.P. SStudies on organophosphorus compounds. CLIV. novel and convenient methods for R the preparation of substituted thiophenes, thiazoles, and 1, 3, 4‐thiadiazole‐2 (3h)‐thiones from bifunctional substrates. ChemInform, 1983, 14(51)
[99]
Kidwai, M.; Dave, B.; Bhushan, K.R. Alumina-supported synthesis of aminoazoles using microwaves. Chem. Pap., 2000, 54(4), 231-234.
[106]
Mishra, M.; Mahalanabis, K.K. Silica supported chromium trioxide: Microwave promoted oxidative ring closure of alpha-cyano-beta-thioenaminones to isothiazoles. Indian J. Chem., 2007, 46B(1), 204-206.