El-Maghraby, A. A. published the artcileSynthesis of coumarin sulfonamides, sulfonates, and related compounds, Related Products of chlorides-buliding-blocks, the publication is Egyptian Journal of Chemistry (1985), 27(4), 459-69, database is CAplus.
Condensation of coumarin-6-sulfonyl chloride I (R = SO2Cl) with H2NCH2CH2NH2 gave sulfonamide I [R = SO2NH(CH2)2NH2], which reacted with aromatic amines to give the corresponding Schiff bases I [R = SO2NH(CH2)2N:CHR1 (R1 = Ph, substituted Ph)]. Various coumarin-3,6-disulfonamides II [R = SO2NHR1 (R1 = Ph, substituted Ph)], diarylsulfonates II [R = SO3R1 (R1 = substituted Ph)], and coumarin-6-sulfonamides I [R = SO2NHR1 (R1 = Bu, CH2Ph, 2-furyl, piperidyl)] were prepared starting from coumarin-3,6-disulfonyl chloride (II, R = SO2Cl).
Egyptian Journal of Chemistry 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, Related Products of chlorides-buliding-blocks.
Referemce:
https://en.wikipedia.org/wiki/Chloride,
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