Cyclic aryleneazachalcogenenes. Part III [1] synthesis of polyfluorinated 2,1,3-benzothia-(selena) diazoles |
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| Authors: | Andrey V Zibarev and Alexey O Miller |
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| Institution: | Institute of Organic Chemistry, Novosibirsk 630090 USSR |
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| Abstract: | 1-(4-X-Tetrafluorophenyl)-3-trimethylsilyl-1,3-diaza-2- thiaallenes (X = H, CH3, Br, F, CF3) treated with CsF in acetonitrile or THF cyclized to 6-X-4,5,7-trifluoro-2,1,3-benzothiadiazoles whose reduction led to the corresponding 1,2-diamino- benzenes. Cyclization of the latter with SeCl4 gave 6-X-4,5,7- trifluoro-2,1,3-benzoselenadiazoles. |
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