(8) in about 50% yield. Diphenylsilacyclohexene, a colorless oil, shows carbon-carbon double-bond stretching absorption at 6.29 p close to the value of 6.25 p found for dichlorosila~ yclopentene.~ The nmr spectrum is complex. In the neat liquid two complex aromatic bands centered at about 6= 7.55 and 7.16 ppm are ascribable to the four ortho and six ineta plus para hydrogens, these bands coalescing in dilute solution to a single ...
