Abstract
Oxidative chlorination of 1-aryl-4-benzylsulfanyl-1H-imidazole-5-carbaldehydes gave 1-aryl-5-formyl-1H-imidazole-4-sulfonyl chlorides which reacted with secondary amines and phenols to produce the corresponding N,N-disubstituted 5-formylimidazole-4-sulfonamides and aryl sulfonates. The reaction of 1-aryl-5-formyl-1H-imidazole-4-sulfonyl chlorides with sodium azide, followed by reduction of the resulting sulfonyl azides, led to the formation of N-unsubstituted 5-formylimidazole-4-sulfonamides, and the reaction with alcohols, to 5-formylimidazole-4-sulfonic acids.
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