Abd El-Aleem, Abd El-Aleem Hassan published the artcileReactions with coumarin-3,6-disulfonyl chloride, Application of Coumarin-6-sulfonyl chloride, the publication is Modelling, Measurement & Control, C: Energetics, Chemistry, Earth, Environmental & Biomedical Problems (1995), 47(1), 49-54, database is CAplus.
The reaction between coumarin-3,6-disulfonyl chloride (I) and amino compounds is investigated. The acid chloride reacts with aliphatic amines such as Et amine, ethanolamine, ethylenediamine or benzylamine to give the corresponding coumarin-6-sulfonamide derivatives While its reaction with secondary amines, aromatic amines or acid hydrazide gives the corresponding coumarin-3,6-disulfonamides. The reaction with hydrazine hydrate gives coumarin-6-sulfonylhydrazide or coumarin-3,6-disulfonylhydrazide, depends on the reaction conditions.
Modelling, Measurement & Control, C: Energetics, Chemistry, Earth, Environmental & Biomedical Problems 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 C9H5ClO4S, Application of Coumarin-6-sulfonyl chloride.
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https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics