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Langer, P.1
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0001572790
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We refer to the reactive species used as dianions knowing that they may represent base associated monolithiated reagents. Bislithiated nitriles: (a) Kaiser, E. M.; Solter, L. E.; Schwarz, R. A.; Beard, R. D.; Hauser, C. R. J. Am. Chem. Soc. 1971, 93, 4237.
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33845279526
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Bislithiated sulfones: (b) Thomson, M. W.; Handwerker, B. M.; Katz, S. A.; Belser, R. B. J. Org. Chem. 1988, 53, 906, and references cited therein
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(c) Vollhardt, J.; Gais, H.-J.; Lukas, Angew. Chem., Int. Ed. Engl. 1985, 24, 608.
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Cyclization reactions of 1,1-dianions with dielectrophiles have only been scarcely desribed in the literature: (a) Müller, J. F. K., Neuburger, M.; Zehnder, M. Helv. Chim. Acta, 1997, 80, 2182.
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(b) Eisch, J. J.; Dua, S. K.; Behrooz, M.; J. Org. Chem. 1985, 50, 3674.
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(c) Mussatto, M. C.; Savoia, D.; Trombini, C.; Umani-Ronchi, A. J. Chem. Soc., Perkin Trans. 1 1980, 260.
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26844558530
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note
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13C NMR spectroscopy.
-
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23
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26844527305
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unpublished results
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Langer, P.; Döring, M., Wuckelt, J., Görls, H.; Beckert, R., unpublished results.
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Langer, P.1
Döring, M.2
Wuckelt, J.3
Görls, H.4
Beckert, R.5
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24
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For recent examples of indole derived photochromic spirooxazines: (a) Malatesta, V.; Millini, R.; Montanari, L. J. Am. Chem. Soc. 1995, 117, 6258.
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(b) Delbaere, S.; Bochu, C.; Azaroual, N.; Buntinx, G.; Vermeersch, G. J. Chem. Soc., Perkin Trans. 2 1997, 1499.
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Delbaere, S.1
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(c) Fabian, J.; Nakazumi, H.; Matsuoka, M. Chem. Rev. 1992, 92, 1197.
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Schank, K.1
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