Aminarshad, Farzaneh published the artcileDesign, solvent-free synthesis and antibacterial activity evaluation of new coumarin sulfonamides, Computed Properties of 10543-42-7, the publication is Journal of the Iranian Chemical Society (2022), 19(2), 547-562, database is CAplus.
A simple cost-effective and green method was presented for the synthesis of coumarin bis sulfonamides I (R = 3-chlorophenyl, 4-methylphenyl, 2,4-dimethylphenyl, etc.), II (R1 = 4-methoxyphenyl, 4-methylphenyl, 2-methoxyphenyl) and III (R2 = 2,4-dimethylphenyl, 2-chlorophenyl). Seventeen novel coumarin sulfonamides I, II, III and IV were synthesized in good to high yield and purity in six steps starting from 2-amino thiazole, aniline, and 4-methoxy aniline. All of the reactions have been done under green conditions without using any hazardous solvent. Also, the anti-bacterial properties of the synthesized sulfonamides I, II, III and IV were investigated using two strains of Staphylococcus (gram-pos.) and Escherichia coli (gram-neg.) bacteria.
Journal of the Iranian Chemical Society 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, Computed Properties of 10543-42-7.
Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics