摘要
考察了茂环上不同取代基及钛上阴离子配体对茂基钛配合物／正丁基锂催化体系加氢活性和稳定性的影响。在充分发挥该体系催化活性的条件下，由配合物Ｃｐ_２ＴｉＣｌ_２、Ｃｐ_２ＴｉＦ_２和Ｃｐ_２Ｔｉ［ＯＣ_６Ｈ_３（ＣＨ_３－２）Ｃｌ－４］_２组成的催化体系对辛烯－１加氢的最高活性（或初活性）达到４６～５８ｓ（－１）。
The effects of substituted group on the cyclopentadienyl ring and various operating factors including the amount of catalyst, the operating procedure,the solvents, the airand water-free conditions on the catalytic activity and stability of titanocene/n-BuLi catalyst system have been investigated. When there is no substituted group on the cyclopentadienyl ring or the substituted group is relatively small,the titanium complex exhibits a very high initial catalytic activity,e. g., the TOFmax(or TOFinitial)of titanocenes {Cp_2TiCl_2,Cp_2TiF_2 or Cp_2Ti[OC_6H_3(CH_3-2)Cl-4]_2}/n-BuLi system may reach 46～58 s-1 for the hydrogenation of l-octene; whereas when the substituted group is larger,the titanium complex exhibits a lower initial catalytic activity but better stability;
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1996年第9期1441-1445,共5页
Chemical Journal of Chinese Universities
基金
国家自然科学基金
中国科学院上海有机化学研究所金属有机化学开放实验室基金
关键词
茂基
钛配合物
正丁基锂
加氢
催化剂
配体
Titanocene,n-Butyl lithium, Hydrogenation catalyst, Ligand effect
