Benzazoles: I. Regioselective arylsulfonylation of benzimidazol-2-amine
T. N. KaipnazarovResearch Institute of Natural Sciences, Karakalpak Division, Academy of Sciences of Uzbekistan Republic, Nukus, UzbekistanК. Б. АбдиреймовBerdakh Karakalpak State University, Nukus, UzbekistanН. С. МухамедовYunusov Institute of Chemistry of Plant Substances, Academy of Sciences of Uzbekistan Republic, ul. M. Ulugbeka 77, Tashkent, 100170, UzbekistanR. Ya. OkmanovYunusov Institute of Chemistry of Plant Substances, Academy of Sciences of Uzbekistan Republic, ul. M. Ulugbeka 77, Tashkent, 100170, UzbekistanB. TashkhodjaevYunusov Institute of Chemistry of Plant Substances, Academy of Sciences of Uzbekistan Republic, ul. M. Ulugbeka 77, Tashkent, 100170, UzbekistanG. E. BerdimbetovaResearch Institute of Natural Sciences, Karakalpak Division, Academy of Sciences of Uzbekistan Republic, Nukus, UzbekistanKh. М. ShakhidoyatovYunusov Institute of Chemistry of Plant Substances, Academy of Sciences of Uzbekistan Republic, ul. M. Ulugbeka 77, Tashkent, 100170, Uzbekistan
ABI
Аннотация
Benzimidazol-2-amine reacted with arenesulfonyl chlorides in the presence of triethylamine in regioselective fashion at the endocyclic nitrogen atom, the exocyclic amino group remaining intact. The yields of 1-arylsulfonylbenzimidazol-2-amines depend on the electronic properties of substituents in the benzene ring of arenesulfonyl chlorides.
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