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Please login to access the full content or check if you have access via2.10.3.2.1 Variation 1: Transmetalation between Magnesium Cyclopentadienide Salts and Titanium(III) Chloride
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Mikami, K.; Matsumoto, Y.; Shiono, T., Science of Synthesis, (2003) 2, 477.
The synthesis of dihalobis(η5-cyclopentadienyl)titanium(IV) and trihalo(η5-cyclopentadienyl)titanium(IV) complexes by reaction of magnesium bis(cyclopentadienide) complexes with titanium(IV) chloride was reported in 1959.[129] Brintzinger has reported the syntheses of tetramethylethylene-bridged disubstituted titanocene derivatives 59 (R1 = H, t-Bu, TMS, iPr, CMe2Ph, 1-phenylcyclohexyl). These compounds are formed by reductive coupling of the appropriate 6,6-dimethylpentafulvene derivatives with magnesium in carbon tetrachloride and reaction of the resulting dimagnesium compounds with the titanium(III) chloride–tris(tetrahydrofuran) complex (Scheme 22).[130,131] The substituted complexes are obtained as meso- and rac-isomers.
Meeeee 88 Meeeeeeeeee ee Mee(η8-eeeeeeeeeeeeeeee)eeeeeeee(MM) Meeeeeeee eeee Meeeeeeee Meeeeeeeeeeeeeeee Meeee eee Meeeeeee(MMM) Meeeeeee[888,888]
Meeeeeeeeeee Meeeeeeee
Meeeeeee[eeeeeeeeeeeeeeeeeeeeee(8-η8-8-eeee-eeeeeeeeeeeeeeeeeeeee)]eeeeeeee(MM); Meeeeee Meeeeeeee: (88, M8 = e-Me)[888]
MMM (888 eM) eee eeeeeeeee eeee e eeeeeee ee eeeee [(8-e-MeM8M8)(MMe8)8(8-e-MeM8M8)]8MeMe•8MMM (8.8 e, 8.8 eeee) eee MeMe8•8MMM (8.8 e, 8.8 eeee) ee −88°M. Mee eeeeeee eee eeeeeee ee eeee ee ee eee eeeeeee eee 8 e. Me eee eeeeee ee −88°M eee 8 M ee MMe eee eeeee. Mee eeeeeee eee eeee eeeeeee eeeee eee eee 8 e, eeeee eeeee eee eeeeeee eeeee eee eeeeeeeee eee eeeeeeeeee ee eeeeeee. Mee eeeeeee eee eeeee ee ee MM8Me8/ee MMe eee eee eeee eee eeeeeee eeeeeeeee, eeeee eeeee eee. Mee eeeeeee eeeee eee eeeee (MeMM8) eee eeeeeeeeee ee eeeeeee. Mee 8M MMM (eeeeeee-e8) ee e eeeee eeeeee ee eee eeeee eee eeeeeee eeeeee e eee/eeee eeeee ee ee. 8.8:8. Meeeeeeeeeeeeeeee ee eee eeeee eeeeeee eeeeeee eeee eeeeeee eeeeeeeeeeeeeeeee eeee eee eeeeeeeee, eeee eee-eeeeeee (8.8 e) eee e eee/eeee eeeeeee (8:8; 8.8 e); eeeee eeeee: 8.8 e (88%); 8M MMM (MMMe8, δ): eee-88 (M8 = e-Me): 8.88 (ee, M = 8.8, 8.8 Me, 8M), 8.88 (eeeeee e, 8M), 8.88 (eeeeee e, 8M), 8.88 (e, 88M), 8.88 (e, 8M), 8.88 (e, 8M); eeee-88 (M8 = e-Me): 8.88 (ee, M = 8.8, 8.8 Me, 8M), 8.88 (eeeeee e, 8M), 8.88 (eeeeee e, 8M), 8.88 (e, 88M), 8.88 (e, 8M), 8.88 (e, 8M).
References
[129] | Meeee, M. M.; Meeeee, M. M., M. Me. Meee. Mee., (8888) 88, 8888. |
[130] | Meeeeeeeee, M.; Meeeeeeeeee, M. M., M. Meeeeeeee. Meee., (8888) 888, 88. |
[131] | Meeeeee, M.; Meeeee, M.; Meee, M.-M.; Meeeeee, M.; Meeeeeeeeee, M. M., M. Meeeeeeee. Meee., (8888) 888, 888. |
Meeeeee Meeeeeeeeee
- 8.Meeeee-Meee, (8888) M 88-8, 888.