Mandour, A. H. published the artcileSynthesis of N-(Coumarinsulfonyl)thiohydantoin and -hydantoin derivatives, Product Details of C9H5ClO4S, the publication is Afinidad (2000), 57(489), 344-348, database is CAplus.
Acylation of glycine with 6-coumarinylsulfonyl chloride or (6-nitro-3-coumarinyl)sulfonyl chloride gave N-[(coumarinyl)sulfonyl]glycine derivatives Treatment of the latter compounds with ammonium thiocyanate and acetic anhydride afforded N-[(coumarinyl)sulfonyl]-3-thiohydantoins. The key intermediates thus prepared were 1-[(2-oxo-2H-1-benzopyran-6-yl)sulfonyl]-2-thioxo-4-imidazolidinone and 1-[(6-nitro-2-oxo-2H-1-benzopyran-3-yl)sulfonyl]-2-thioxo-4-imidazolidinone. Hydrolysis of these intermediates using aqueous chloroacetic acid gave N-[(coumarinyl)sulfonyl]hydantoins. Thus, the above (thioxo)imidazolidinones were transformed into the resp. diones, 1-[(2-oxo-2H-1-benzopyran-6-yl)sulfonyl]-2,4-imidazolidinedione and 1-[(6-nitro-2-oxo-2H-1-benzopyran-3-yl)sulfonyl]-2,4-imidazolidinedione. Condensation of N-[(coumarinyl)sulfonyl]-3-thiohydantoins and N-[(coumarinyl)sulfonyl]-3-hydantoins with (arylidene)malononitrile in piperidine gave the corresponding pyrano[2,3-d]imidazolidines. Also, the condensation of the above intermediates with aromatic aldehyde led to the formation of 5(arylidene)thiohydantoins and 5-(arylidene)hydantoins. The condensation of the latter compounds with malononitrile was also carried out.
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 C9H5ClO4S, Product Details of C9H5ClO4S.
Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics