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Imidoylketenes, ca. 6 kcal/mol: Finnerty, J.; Wentrup, C. Unpublished results.
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Imidoylketenes, ca. 6 kcal/mol: Finnerty, J.; Wentrup, C. Unpublished results.
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note
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An isomeric ketene-pyridine zwitterion could conceivably have been formed by cyclization of ketene 3Z; this is unlikely because no trace of the 1760 cm"1 species was observed in the matrixes of the thermally generated ketene, nor did it ever appear on photolysis of the ketenes. Moreover, a B3LYP/6-31G* calculation indicated that the cyclic zwitterion from 3 is not an energy minimum in the gas phase, ring opening instead to the ketene.
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21
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33847541478
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A small band at 1784 cm"1 may be due to a site of 6 or to another compound, e.g. cyclobuta[fc]pyridin-6-one. On irradiation, this band disappears at the same time as those ascribed to 6.
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A small band at 1784 cm"1 may be due to a site of 6 or to another compound, e.g. cyclobuta[fc]pyridin-6-one. On irradiation, this band disappears at the same time as those ascribed to 6.
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22
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0034615208
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Ye, X.; Andraos, J., Bibas, H.; Wong, M. W.; Wentrup, C. J. Chem. Soc., Perkin Trans, l 2000, 401.
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Ye, X.1
Bibas H, A.J.2
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Wentrup, C.4
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25
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33847541929
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Plug, C.; Wentrup, C. Unpublished work.
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Plug, C.; Wentrup, C. Unpublished work.
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26
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0004133516
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