Synthesis and structures of adamantyl-substituted constrained geometry cyclopentadienyl–phenoxytitanium complexes and their catalytic properties for olefin …

J Li, W Gao, Q Wu, H Li, Y Mu

Index: Li, Jincai; Gao, Wei; Wu, Qiaolin; Li, Hongchun; Mu, Ying Journal of Organometallic Chemistry, 2011 , vol. 696, # 13 p. 2499 - 2506

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Citation Number: 8

Abstract

Abstract A number of new constrained geometry titanium complexes,[η 5: η 1-2-C 5 Me 4-4- R-6-Ad-C 6 H 2 O] TiCl 2 [Ad= adamantyl, R= Me (8), t Bu (9)] and [η 5: η 1-C 5 H 2 Ph 2-4-t Bu-6-Ad-C 6 H 2 O] TiCl 2 (10), were synthesized from reactions of TiCl 4 either directly with corresponding free ligands, 2-C 5 Me 4 H-4-R-6-Ad-C 6 H 2 OH [R= Me (5), t Bu (6)], or with the dilithium salt of the free ligand 2-C 5 H 3 Ph 2-4-t Bu-6-Ad-C 6 H 2 OH (7). These new ...