An interesting recyclization in the course of reduction of 1-(2-nitro-4-R-phenyl)-1H-benzimidazoles with tin(II) chloride

Add time:08/03/2019    Source:sciencedirect.com

Reduction of 1-(2-nitro-4-R-phenyl)-1H-benzimidazoles with tin(II) chloride in an acidic water–alcohol medium is accompanied by unusual recyclization of 1-(2-amino-4-R-phenyl)-1H-benzimidazoles formed at the first stage into isomeric 1-(2-aminophenyl) - 5-R-1H-benzimidazoles.

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