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- W2952566788 abstract "3-Carbethoxy-4,6-diphenyl-2-pyrridine sulfonamide (5), can be cyclized to 3-oxo-2,3-dihydro-4,6-diphenylisothiazolo[5,4-b]pyridine-1,1-dioxide (2). Oxidation of pyridinethione6 with Cl2/H2O gave the sulfonyl chloride derivative7, which can be ammonolyzed to 3-amino-4,6-diphenylisothiazolo[5,4-b]pyridine-1,1-dioxide (8), and 3-cyano-4,6-diphenylpyridine-2-sulfonamide (9). Hydrolysis of6 gave 3-carboxamido-2(1H)pyridinethione (12) which can be oxidized with iodine to 3-oxo-4,6-diphenyl-2,3-dihydroisothiazolo[5,4-b]pyridine (13). 3-Methyl-4,6-diphenylisothiazolo[5,4-b]pyridine-1,1-dioxide (17) was also prepared from6." @default.
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- W2952566788 date "1990-07-31" @default.
- W2952566788 modified "2023-09-27" @default.
- W2952566788 title "ChemInform Abstract: Heterocyclic Synthesis with 3-Cyano-2(1H)pyridinethione. Synthesis of 3-Oxo-2,3-dihydroisothiazolo(5,4-b)pyridine and Related Compounds." @default.
- W2952566788 cites W2318447990 @default.
- W2952566788 doi "https://doi.org/10.1002/chin.199031186" @default.
- W2952566788 hasPublicationYear "1990" @default.
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