文摘
The composition and structure of the products of the reaction of titanium tetrafluoride with Ph2P(O)(CH2)2C(O)NМе2 (L), the simplest representative of diphenyl[2-(N,N-dialkylcarbamoyl)ethyl]phosphine oxides, in a СН2Сl2 have been studied by 19F and 31P NMR. It has been shown for the first time that functionalized phosphine oxides form stable seven-membered chelate heterocycles on complexes of d° transition metals. On the basis of NMR data, previously unknown conformational isomerism of the seven-membered TiOPCCCO heterocycle in solution has been proposed. A simple and rather efficient method of synthesis of the ligand (L) from commercially available reagents has been developed.Original Russian Text © E.G. Il’in, A.S. Parshakov, V.I. Privalov, V.V. Danilov, G.V. Bodrin, E.I. Goryunov, E.E. Nifant’ev, 2016, published in Doklady Akademii Nauk, 2016, Vol. 467, No. 5, pp. 547–550.
