Reaction #806264

Reaction equation

Pentane

bis(propylcyclopentadienyl) zirconium dichloride

tributyltin fluoride

→

bis(propylcyclopentadienyl)zirconium difluoride

Solvents

dichloromethane

Conditions

Workup

1. 1
   OtherThe reaction
2. 2
   Filtrationwas then filtered
3. 3
   Otherto give a colorless solution
4. 4
   OtherThe solution was evaporated in vacuo
5. 5
   Otherleaving a damp, white solid
6. 6
   FiltrationThe mixture was filtered
7. 7
   Otherresulting white solid
8. 8
   Washwas washed with pentane (3×3 mL)
9. 9
   Temperaturecooled to −35° C
10. 10
    OtherThe white solid was dried in vacuo
11. 11
    Otherto yield 0.75 g (82%)

Procedure

To a straw yellow solution of bis(propylcyclopentadienyl) zirconium dichloride [(PrCp)2ZrCl2] (1.00 g, 2.66 mmol, 1.00 eq.) in dichloromethane (10 mL) was added tributyltin fluoride (1.72 g, 5.57 mmol, 2.10 eq.). The reaction rapidly lightened, turning almost colorless. The reaction was stirred 1 h and was then filtered to give a colorless solution and a small amount of white solid. The solution was evaporated in vacuo, leaving a damp, white solid. Pentane (10 mL) was added and the mixture was cooled to −35° C. The mixture was filtered, and resulting white solid was washed with pentane (3×3 mL) cooled to −35° C. The white solid was dried in vacuo to yield 0.75 g (82%). 1H NMR(CD2Cl2): δ 0.92 (t, 6H, CH2CH2CH3), 1.56 (m, 4H, CH2CH2CH3), 2.44 (t, 4H, CH2CH2CH3), 6.05 (m, 4H, ring-H), 6.30 (m, 4H, ring-H). 19F NMR(CD2Cl2): δ 20.4 (s).

Source