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- W2136224430 abstract "9-Diazo-1.8-diaza-fluoren (2) reagiert mit 2.6-Dimethyl-pyran-4-thion (3a) bzw. mit 2.6-Dimethyl-1-thia-pyran-4-thion (3b) zu den entsprechenden Dipyridinoheterosesquifulvalenen 1a und b. Aus 1a entsteht mit n-Butylamin durch O/N-Austausch das entsprechende Azaloge 1c. NMR-und Elektronenspektren der π-Basen 1 und der konjugaten Säuren 4 werden diskutiert und mit denen des Dibenzoheterosesquifulvalens 5 verglichen. Cyclopentadienylidenes, X. – Dipyridinoheterosesquifulvalenes Reaction of 9-diazo-1,8-diazafluorene (2) with 2,6-dimethylpyrane-4-thione (3a) or with 2,6-dimethyl-1-thiapyrane-4-thione (3b) yields the corresponding dipyridinoheterosesquifulvalenes 1a and b. With n-butylamine compound 1a forms the nitrogen analog 1c by O/N-exchange. NMR- and ultraviolet absorption spectra of the π-bases 1 and of the conjugate acids 4 are discussed and compared with those of the dibenzoheterosesquifulvalene 5." @default.
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- W2136224430 date "1972-06-16" @default.
- W2136224430 modified "2023-10-16" @default.
- W2136224430 title "Cyclopentadienylidene, X. Dipyridinoheterosesquifulvalene" @default.
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- W2136224430 doi "https://doi.org/10.1002/jlac.19727570111" @default.
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