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Sodium Metabisulfite in Benzimidazole Formation?
There are a number of published procedures for the formation of benzimidazoles from 1,2-diaminobenzenes and benzaldehydes:
Clearly, an oxidant is required.
Many procedures call …
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Sodium Metabisulfite as Oxidant in Organic Synthesis?
A recent question asked about the role of sodium metabisulfite in the synthesis of benzimidazoles.
In one of the answers, a proposal was made for a radical process in which two hy …
