Formation of Reissert compound of bisbenzimidazole

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1991-06-04
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United States Patent and Trademark Office
Abstract

A Reissert compound of bisbenzimidazole can be formed by first reacting benzimidazole with an aliphatic diacid chloride to form bisbenzimidazole and then reacting the bisbenzimidazole with an aliphatic acid chloride and cyanide to form the Reissert compound thereof.

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