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ESR method was used to elucidate the mechanism of the reactions of alkyl,allyl or benzylhalides with dicyclopentadienyldicarbonyl titanium.The paramagnetic intermediates of the reac-tions were identified during the course of the reactions.The reaction mechanism based on ESR find-ings and the products analyses is postulated to operate on radical pathways.When alkyl halideswere used to react with the organometallic compound 1,the intermediate found was[Cp_2Ti(CO)X](C),and the main product was identified to be dicyclopentadienyl-acyl-halo titanium(3),an insertion ofTiCO into R-X,i.e.[Cp_2Ti-C(O)R]X.When allyl or benzyl halidcs were used,the intermediatefound was[Cp_2TiX](B),and the main products were identified to be the dicyclopentadienyl titaniumdihalides and the coupling products of allyl or benzyl groups.
ESR method was used to elucidate the mechanism of the reactions of alkyl, allyl or benzylhalides with dicyclopentadienyldicarbonyl titanium. The paramagnetic intermediates of the reac-tions were identified during the course of the reactions. Reaction mechanism based on ESR find-ings and the products analyses is postulated to operate on radical pathways. Article alkyl halideswere used to react with the organometallic compound 1, the intermediate found was [Cp_2Ti (CO) X] (C), and the main product was identified to be dicyclopentadienyl-acyl-halo titanium (3), an insertion of TiCO into RX, ie [Cp_2Ti-C (O) R] X.When allyl or benzyl halidcs were used, the intermediatefound was [Cp_2TiX] (B), and the main products were identified to be the dicyclopentadienyl titaniumdihalides and the coupling products of allyl or benzyl groups.