of ketene silyl acetal in sharp contrast to the inertness of normal alkyltin halides like Bu2SnCl2. The increased Lewis acidity of the pentafluorophenyltin halides was proved by 119Sn- and 13C-NMR spectra. On the other hand, the pentafluorophenyl group reduced the reactivities of tin towards both nucleophiles and electrophiles. 19F-NMR spectroscopy was invoked to elucidate this anomaly.
Amido derivatives of metals and metalloids XII. Further reactions with protic compounds
作者:A.D. Jenkins、M.F. Lappert、R.C. Srivastava
DOI:10.1016/s0022-328x(00)92810-9
日期:1970.6
trimethyl(pentafluorophenyl)tin, Me3SnC6F5. This is the first example of such an amine elimination reaction involving an aromatic hydrocarbon. Amides of titanium(IV) [e.g. Ti(NMe2)4] or zirconium(IV) were found not to react with C6F5H; but the amine-elimination reaction furnished the following derivatives from appropriate organometallic dimethylamides: Ti(NCH2CH2)4, Cp2Zr(NCH2CH2)2 (Cp = π-C5H5), π-(