ORGANOMETALLIC CHEMISTRY OF AMBIDENT DIANIONS - REACTIONS OF ORGANOSILICON DIHALIDES WITH ACETONE DIANIONS - REMARKABLE DIFFERENCE IN REACTIVITY BETWEEN DIORGANODICHLOROSILANES AND DIORGANODIFLUOROSILANES
D. Seyferth et al., ORGANOMETALLIC CHEMISTRY OF AMBIDENT DIANIONS - REACTIONS OF ORGANOSILICON DIHALIDES WITH ACETONE DIANIONS - REMARKABLE DIFFERENCE IN REACTIVITY BETWEEN DIORGANODICHLOROSILANES AND DIORGANODIFLUOROSILANES, Organometallics, 14(5), 1995, pp. 2136-2138
The [CH2C(O)CPh(2)](2-) dianion reacted with R(2)SiCl(2) (R = Ph, CH3,
Et) to give cyclic products of type 5, but with R(2)SiF(2) 4 (R = Ph,
Et) was formed. The structures of 5 and 4 (R = Ph) were determined by
single-crystal X-ray diffraction. A reason for the difference in the
regioselectivity of the reactions of the dianion with R(2)SiCl(2) and
R(2)SiF(2) is suggested.