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6. Formation of thiopyrone- and thiazine systems (Chemistry of carbon subsulfide II)
Stadlbauer W., Kappe Th., Ziegler E. Z. Naturforsch. 32b, 893-897 (1977)

Abstract: Carbon subsulfide, prepared by pyrolytic reduction of carbon disulfide, reacts with 6-chloro-4-hydroxycoumarin and thiobenzamide to yield the polythiopyrones and thiazinethiones 5, 6 and 7. 2-Mercaptopyridine and carbon subsulfide give the mesoionic compound 8. Generally it can be shown that carbon subsulfide reacts to give higher fused products.


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