Letters in Organic Chemistry

An Improved Method for the Synthesis of Triarylmethanes Using Heterogenized 12-Tungestocobaltic Acid

E Rafiee, F Jalilian

Index: Rafiee, Ezzat; Jalilian, Fereshteh Letters in Organic Chemistry, 2014 , vol. 11, # 3 p. 203 - 207

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Citation Number: 2

Abstract

Two heterogeneous catalysts based on 12-tungestocobaltic acid, including K5CoW12O40 and H5CoW12O40 supported on rice husk ash extracted nano silica (CoW/NSiO2), were used in selective alkylation of arenes with benzhydrol (diphenylmethanol). CoW/NSiO2 exhibited the highest activity. Thus, it was selected as the best choice for the synthesis of various triarylmethanes. This catalyst could be recycled by simple filtration and reused ...

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