Abstract
A new approach to the synthesis of dithienothiophene was developed, and 1,2-bis(2,6-dimethyldithieno[3,2-b;2",3"-d]thiophen-3-yl)hexafluorocyclopent-1-ene was prepared. The latter compound is the first representative of photochromic dihetarylethenes with the fused tricyclic fragments linked through the perfluorocyclene bridge.
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Krayushkin, M.M., Stoyanovich, F.M., Zolotarskaya, O.Y. et al. Photochromic dihetarylethenes. 18. New approach to the synthesis of dithienothiophene and preparation of its photochromic derivative. Russian Chemical Bulletin 51, 2097–2099 (2002). https://doi.org/10.1023/A:1021676313508
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DOI: https://doi.org/10.1023/A:1021676313508