Vasant Helavi

[ 1 ] - Indium chloride (InCl3) catalysed domino protocol for the regioselective synthesis of highly functionalized pyranopyrazoles under mild conditions

Regioselective synthesis of highly functionalized pyranopyrazoles was achieved in excellent yield from phenyl pyrazolone, substituted aromatic aldehyde with nitroketene-N,S-acetal in the presence of indium trichloride as a versatile catalyst under reflux condition in ethanol-water mixture. All reactions preceeded within a short period of time with excellent purity. All of the synthesized compou...