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1. NaHSO4-SiO2-Promoted Solvent-Free Synthesis of Benzoxazoles, Benzimidazoles, and Benzothiazole Derivatives.

Author

Kumar, K. Ravi, Satyanarayana, P. V. V., and Reddy, B. Srinivasa

Subjects
*SODIUM sulfate, *SOLVENTS, *BENZOXAZOLES, *CHEMICAL synthesis, *BENZIMIDAZOLES, *BENZOTHIAZOLE derivatives, *AROMATIC compounds
Abstract

An efficient protocol has been developed for the preparation of a library of benzoxazole, benzimidazole, and benzothiazole derivatives from reactions of acyl chlorides with o-substituted aminoaromatics in the presence of catalytic amount of silica-supported sodium hydrogen sulphate under solvent-free conditions. Simple workup procedure, high yield, easy availability, reusability, and use of ecofriendly catalyst are some of the striking features of the present protocol. [ABSTRACT FROM AUTHOR]

Published
2013
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