Lithiated organophosphorus enamines : a new synthetic approach and the first crystal structures

Clegg, W. and Davies, R.P. and Dunbar, Lorraine and Feeder, N and Liddle, S.T. and Mulvey, Robert and Snaith, R. and Wheatley, A.E.H. (1999) Lithiated organophosphorus enamines : a new synthetic approach and the first crystal structures. Chemical Communications, 1999 (15). pp. 1401-1402. ISSN 1359-7345 (https://doi.org/10.1039/A903175H)

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Abstract

Made by a nitrile insertion/hydrogen migration process via Ph2P(O)CH2Li and (BuCN)-C-t, the enamide Ph2P(O)CH=C(Bu-t)N(H)Li and its TMEDA hemisolvate exist as tetrameric and dinuclear arrangements respectively: the novel structure of the starting lithiated phosphane oxide, also in its TMEDA hemisolvated form, is shown to contain Li-C contacts of two distinct types.