Abstract

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.

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