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Publikováno v:
Liebigs Annalen der Chemie. 1993:305-311
Ring-Fused 1,2-Dithioles, III. – Synthesis of 1,2-Dithiolo-furans A series of 1,3-dithiino-furans 4/9 has been synthesized by starting with the β-ketoester 5a or the cyclic ketone 5b. The dithiines undergo oxidative ring contraction to give the co