AN UNUSUAL REACTION OF TETRAPHENYLCYCLOPENTADIENYL DERIVATIVES OF THE GROUP IVA ELEMENTS WITH ISOPROPYLIDENETRIPHENYLPHOSPHORANE

Article abstract of DOI:10.1016/0022-328X(84)85092-5

Reactions of the compounds of the R2R'EC29H21 type (R = Alk; R'Alk,Cl; E = Si, Ge, Sn; C29H21 = 1,2,3,4-tetraphenylcyclopentadiene-5-yl) with Ph3P=CMe2 were carried out.As was shown for Me3GeC29H21 by 13C and 31P NMR spectroscopy, the reactions proceed in the direction of demetallation (kinetic control) and deprotonation (thermodynamic control); the salts -⁺ were isolated.