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In contrast with 1a-e, hydrazone 1f failed in the 1,2 addition to trifluoromethyl ketones: C. Pareja, E. Martín-Zamora, R. Fernández, J. M. Lassaletta, J. Org. Chem. 1999, 64, 8846. In addition, ab initio calculations predict an almost perfect planar geometry for the hydrazone moiety in the transition states corresponding to the addition of N,N-dialkylhydrazones to π-electrophiles: R. R. Pappalardo, J. M. Muñoz, R. Fernández, J. M. Lassaletta, unpublished results.
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The scope and mechanistic aspects of this novel reaction are currently under study in our laboratory
-
The scope and mechanistic aspects of this novel reaction are currently under study in our laboratory.
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31
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0343705779
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note
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2; conventional R factors are based on F. The configuration of C-3 is based on that known for C-2′ in the auxiliary. Crystallographic data (excluding structure factors) for the structure reported in this paper have been deposited with the Cambridge Crystallographic Data Centre as supplementary publication no. CCDC-135522. Copies of the data can be obtained free of charge on application to CCDC, 12 Union Road, Cambridge CB2 1EZ, UK (fax: (+ 44) 1223-336-033; e-mail: deposit@ccdc.cam.ac.uk).
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-
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32
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0020405829
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note
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