Reaction #1528392

Reaction equation

1,3-bis(2,6-diisopropylphenyl)-iminoimidazoline

cyclopentadienyltitanium trichloride

triethylamine

→

1,3-bis(2,6-diisopropylphenyl)-iminoimidazoline cyclopentadienyl titanium dichloride

Yield 46.0%

Solvents

toluene

—

ligroin

toluene

Conditions

Workup

1. 1
   TemperatureThe suspension was heated
2. 2
   Temperatureto reflux
3. 3
   Filtrationfiltered hot
4. 4
   Otherafforded yellow crystals, which
5. 5
   Filtrationwere filtered
6. 6
   Washwashed with cold ligroin

Procedure

To a suspension of 1,3-bis(2,6-diisopropylphenyl)-iminoimidazoline (2.03 g, 5.0 mmol) and cyclopentadienyltitanium trichloride (1.10 g, 5.0 mmol) in toluene (30 mL) was added triethylamine (0.8 mL, 5,7 mmol) at ambient temperature. After stiriring for 1 hour, the thick yellow-orange suspension was diluted with toluene (50 mL) and ligroin (120 mL). The suspension was heated to reflux and filtered hot. Cooling to approx. 4° C. afforded yellow crystals, which were filtered and washed with cold ligroin to give 1.34 g (46% yield) of NMR pure 1,3-bis(2,6-diisopropylphenyl)-iminoimidazoline cyclopentadienyl titanium dichloride.

Source