REACTION OF A ZIRCONOCENE-ETHYLENE COMPLEX WITH GROUP-14 METAL CHLORIDES OR ALKOXIDES

A zirconocene-ethylene complex Cp2Zr(CN2=CH2)-(PMe3) reacted with R3EX (E = Si, Ge, Sn; R = Ph or Bu; X = Cl, Oft, or OER3) to give R3EEt in high yields after hydrolysis. The reaction mixture of the ethylene co mplex with Bu3SnCl further reacted with phenylacetylene to give homoal lyltin compounds. When the reaction mixture was treated with Ph3SnCl o r Ph3GeCl instead of phenylacetylene, Ph3SnEt or Ph3GeEt was obtained in high yields after hydrolysis via the replacement of the beta-SnBu3 moiety.