Benzazoles: IV. Reaction of 1,3-Dihydro-2H-benzimidazol-2-ones with Chlorosulfonic Acid
Yu. R. TakhirovUrgench State University, 220100, Urgench, UzbekistanD. A. DushamovUrgench State University, 220100, Urgench, UzbekistanRustamkhon KuryazovUrgench State University, 220100, Urgench, UzbekistanR. M. UsmonovUrgench State University, 220100, Urgench, Uzbekistan
ABI
Аннотация
1,3-Dihydro-2H-benzimidazol-2-ones reacted with chlorosulfonic acid at 50–60°C to give 5-chlorosulfonyl-1,3-dihydro-2H-benzimidazol-2-ones regardless of the reactant ratio (1:1 to 1:5). 5-Chloro-1,3-dihydro-2H-benzimidazol-2-ones failed to react with chlorosulfonic acid at 50–60°C, and the corresponding 5-chloro-6-chlorosulfonyl derivatives were obtained at 110–120°C.
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