Yttrium Aluminum Garnet (YAG: Al5Y3O12) as an Efficient Catalyst for the Synthesis of Benzimidazole and Benzoxazole Derivatives

Yttrium aluminum garnet (YAG) was used to efficiently catalyzed andas an eco-friendly method and efficient catalyst for the synthesis of benzimidazole and benzoxazole derivatives by through the one-pot cyclocondensation of various aldehydes with o-phenylenediamines and o-aminophenol in ethanol at 70 °C. The present method revealed several advantages such as high yields, easy purification, mild reaction conditions, easy work-up, and short reaction times. Also, the nanoparticles (YAG) were found to be easily synthesized, cheap, air and moisture stable, heterogenic, and green catalyst.