Dioxo- and aminooxopyrimidotetrathiafulv
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O. Neilands; V. Tilika; I. Sudmale; I. Grigorjeva; A. Edzina; E. Fonavs; I. Muzi
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Article
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1997
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John Wiley and Sons
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English
⚖ 417 KB
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Dimethyl[2,4-dioxo(1H,3H)pyrimido ]tetrathiafulvalene (1) and dimethyl-[2-amino-4oxo(3H)pyrimido ]tetrathiafulvalene (4) form unusual inner salts by oxidation in the presence of bases. The insoluble black -green betaines 2 and 5 react with acids to form cation radical salts. Betaine 2 in the presenc