Tetra-N-Butyl ammonium hydroxide mediated one-pot synthesis of pyrano [2, 3-d] pyrimidinone derivatives

Abstract

Tetra-N-Butyl Ammonium Hydroxide was used as a catalyst for one-pot, three component <br /><br />condensation reactions consisting of aromatic aldehydes, malononitrile and barbituric acid in <br /><br />ethanol:water solvent system at 60oC. Current method has major advantages like mild reaction<br /><br /> conditions with simple operation, high yields, by using a less toxic and lower costlier catalyst.<br />In conclusion, we have explored nicely the synthetic utility of TBAOH as a commercially available, efficient, mild, straightforward, simple, environmentally and economically friendly organo-basic catalyst for the synthesis of diverse Pyrano[2,3-d]pyrimidinone derivtives. Thus we have developed a novel, simple and highly efficient one potmulticomponent reaction protocol for the synthesis of Pyrano[2,3-d]pyrimidinone derivtives in ethanol:water solvent system.