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二氯二茂钛可与醇、酚、酸等反应生成相应的烃氧基或酰氧基二茂钛。当钛一氧键中氧的未共用电子与π键发生共轭,或与氧相连的取代基上带有强吸电子基团时,这类化合物较稳定,所以近年来合成了一系列芳氧基和一些卤素取代的酰氧基二茂钛,二氯二茂钛及其衍生物,能引发某些烯类的聚合。 本文合成了六种未见文献报导的双环〔2,2,1〕庚-5-烯-2-甲氧基,-2-甲酰氧基二茂钛衍生物:
The titanocene dichloride can be reacted with alcohols, phenols, acids and the like to form the corresponding hydrocarbyloxy groups or acyloxy titanocenes. In the recent years, a series of aryloxides have been synthesized when the unshared electrons of oxygen in titanium-oxygen bond are conjugated with π bond or the substituents with strong electron-withdrawing groups attached to oxygen are relatively stable. And some halogen-substituted acyloxy titanocenes, titanocene dichloride and its derivatives, can initiate the polymerization of certain olefins. In this paper, six novel bicyclic [2,2,1] hept-5-en-2-methoxy and 2-formoxyl titanocene derivatives have been synthesized: