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Abstract

AN IMPROVED PROCESS FOR THE PREPARATION OF ETHYL 4-(5-AMINO-1-METHYL-1H-BENZIMIDAZOL-2-YL) BUTANOATE (BENDAMUSTINE INTERMEDIATE)

Kasinathan Mathiyazhagan*, Satti Srinivas and J. V. D. Prasad

ABSTRACT

A safe and convenient process for the synthesis of Ethyl 4-(5-amino-1-methyl-1H-benzimidazol-2-yl) butanoate (Bendamustine Intermediate) was developed, using platinum group metal-free and efficient reduction of nitro group with iron powder and ammonium chloride in biphasic medium.

Keywords: Reduction, Biphasic, Phase transfer catalyst, Iron, Ammonium chloride.


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