反应详情

A 0.5 g portion of dimethylsilylenebis(2-methylindenyl)zirconium dichloride obtained in Example 1 was dissolved in 250 ml of dichloromethane and introduced into a 1.0 liter autoclave, and 0.5 g of platinum oxide was then introduced. Hydrogen pressure was increased to 50 kg/cm2 ·G to carry out hydrogenation at 30° C. for 4 hours. After the reaction was completed, the slurry was filtered to separate the platinum catalyst, and the solvent was removed by distillation. The product was dissolved in 200 ml of toluene, and the solution was concentrated into about 50 ml, which was left standing overnight at -20° C. to form crystals. The crystals formed were filtered, and desiccated to give 0.22 g of the title product.

1. additionwas then introduced
2. customat 30° C.
3. customfor 4 hours
4. filtrationthe slurry was filtered
5. customto separate the platinum catalyst
6. customthe solvent was removed by distillation
7. dissolutionThe product was dissolved in 200 ml of toluene
8. concentrationthe solution was concentrated into about 50 ml, which
9. waitwas left
10. customto form crystals
11. customThe crystals formed
12. filtrationwere filtered