The Activity of Magnesium/Aluminum ‘Memory Effect’ Reconstructed Hydrotalcites in the Microwave-Assisted Synthesis of 2-Benzimidazolethiol and Its Alkylated Derivatives

Abstract

An efficient and practical methodology for the microwave-assisted synthesis of 2-benzimidazolethiol from 1,2-benzenediamine and carbon disulfide using reconstructed hydrotalcite is described. The corresponding mono- and dialkylated derivatives of 2-benzimidazolethiol were obtained generally in good to excellent yields after short reaction times. Reconstructed hydrotalcite proved to be an efficient and reusable heterogeneous base for the alkylation reactions.

Key words

hydrotalcite - heterogeneous bases - microwave irradiation - heterocycles - alkylations

• References

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