Zeid, I. F. published the artcileReactions with coumarin. VIII, Formula: C9H5ClO4S, the publication is Afinidad (2003), 60(505), 295-299, database is CAplus.
A series of thiadiazole and selenadiazole derivatives was synthesized via oxidative cyclization of some semicarbazone derivatives of the types I. The later compounds were formed via reaction of coumarin-6-sulfonyl chloride 1 with m-, p-aminoacetophenone and/or o- and p-hydroxyacetophenone to give coumarin-6-sulfonamides II or the esters. Condensation of II and the esters with semicarbazide hydrochloride afforded the semicarbazones of type I. Oxidative cyclization of I with thionyl chloride led to the formation of the thiadiazole derivatives III. On the other hand, oxidative cyclization of I with selenium dioxide led to the formation of the corresponding selenadiazole derivatives
Afinidad published new progress about 10543-42-7. 10543-42-7 belongs to chlorides-buliding-blocks, auxiliary class Other Aromatic Heterocyclic,Chloride,Sulfonyl chlorides,Ester, name is Coumarin-6-sulfonyl chloride, and the molecular formula is C3H5BN2O2, Formula: C9H5ClO4S.
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