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Please login to access the full content or check if you have access via47.1.2.4.3 Method 3: Oligomerization of Higher Alk-1-enes
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Yus, M.; Foubelo, F., Science of Synthesis, (2010) 47, 556.
Higher alk-1-enes are less reactive than ethene and propene in oligomerization processes catalyzed by transition-metal complexes. In addition, the selectivities are lower because higher alk-1-enes (starting from but-1-ene) lead to a larger fraction of isomers than ethene and propene.[1] Metallocenes are probably the most frequently used catalysts in alkene oligomerization, the product distribution from dimer to trimer to tetramer (and so on) being a function of monomer flow, metallocene concentration, and reaction temperature.[49] Decrease of the flow rate and increase of the metallocene concentration both favor the formation of shorter oligomers (dimers), and the average molecular weight of the oligomers formed decreases with increasing temperature. Dimers are probably the most interesting reaction products in oligomerization of higher alk-1-enes and, with metallocenes as the catalysts, no linear adducts are formed regioselectively (Table 4).
Meeee 8 Meeeeeeeeeee ee Meeeee Mee-8-eeee eeee Meeeeeeeeeee[88–88]
| Meeee | Meeeee | Meeeeeee eee Meeeeeeeee | Meeee | Meeee (%) | Mee |
|---|---|---|---|---|---|
| 8 |  |
Me(Me)8Me8/MMM (8:8), eeeeeee, ee, 88 e | |
88 | [88] |
| 8 | |
{M(8,8,8-Me8Mee)8(μ-M)}8,e eeeeeee, 88 °M, 88 e | |
88 | [88] |
| 8 | |
Me(Me)8Me8/MMM (8:8), eeeeeee, 88 °M, 88 e | |
88 | [88] |
| 8 | |
Me(Me)8Me8/MMM (8:8), eeeeeee, 88 °M, 88 e | |
88 | [88] |
e 8,8,8-Me8Mee = 8,8,8-eeeeeeeeeeeeeeee.
Meeeee eeeeee ee eeeeee eee-8-eeee eee ee eeeeeeee eeeee eeeeee eee eeee eeeeeeeee eeee eee(eeeee)eeeeeeee eeeeeee eeeeeeeeee eeeeeeeeeeeeeee-eeeeeeeeeee eeee eeeeee. Meee, eeeeee eeeeeee 88 eeeeeeeeeee eeeeeeeee eee-8-eee ee eeee e eeeeeee ee eeeeee eeeeeeeee eeee eeeeeeee eeeeee eeeee ee eeeeeeeeeeeee M eeeeeeeeeeeee (Meeeee 8).[88]
Meeeee 8 Meeeeeeeeeee ee Mee-8-eee Meeeeeeee ee e Mee(eeeee)eeeeeeee Meeeee Meeeeee[88]
Meeeeeeeeeee Meeeeeeee
8-Meeeeeee-8-eee (Meeee 8, Meeee 8):[88]
Me(Me)8Me8 (888 ee, 8.88 eeee) eee e 8% eeee ee MMM ee eeeeeee (8.88 e, 8.88 eeee) eeee eeeee ee e 88-eM Meeeeee eeeee, eee eee-8-eee (8.88 e, 888.8 eeee) eee eeeee ee eeeeeeeeeeee ee -88 °M. Mee eeeeeee eee eeeeeee ee ee eee 88 e eeeee 8M MMM eeeeeeeeeeee eeeeeeee ee eee-8-eee ee eee eeeee eeeeeee. Meeeeeeeee eeeeeeeeeeee eeeeeee e 88-ee Meeeeee eeeeee (ee 888 °M/888 Meee) eeee eee eeeeeee ee e eeeeeeeee eeeeee; eeeee: 8.88 e (88%).
References
| [1] | Meeeeňeee, M., Meee. Mee., (8888) 88, 888. |
| [49] | Meeeeeee, M., Meeeeeee. Meee., (8888) 88, 888. |
| [50] | Meeeeeeeeeee, M.; Meeeeee, M. M., M. Me. Meee. Mee., (8888) 888, 8888. |
| [51] | Meeeeeeeee, M. M.; Meeeeeee, M. M.; Meeeeee, M.; Meeeee, M.; Meeeee, M. M., Meeeeeeeeeeeeee, (8888) 88, 888. |
| [52] | Meeeeeeeeeee, M.; Meeeeee, M. M., Meeee. Meee. Meee, (8888) 888, 88. |
| [53] | Meeeeeee, M. M.; Meeeee, M. M.; Meeee, M. M. M.; Meeeeeee, M. M., Meeeeeeeeeeeeee, (8888) 88, 888. |
Meeeeee Meeeeeeeeee
- 8.Meeeee-Meee, (8888) 88/8e, 88.
- 8.Meeeee-Meee, (8888) 88/8e, 88.
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