反应详情

3.4 g of rac-dimethylsilylbis(2-methylbenzo[e]indenyl)zirconium bis(3,5-di-tert-butylphenoxide) (IV) from example 1 were suspended in 35.8 g of toluene in a dry round-bottomed flask which had been flushed with inert gas and was provided with stopcock and magnetic stirrer bar. At room temperature, 7.5 g of a 10% strength by weight solution of acetyl chloride in toluene were quickly added to this suspension via a dropping funnel. The mixture was stirred at room temperature. After 4 hours, the reaction mixture was filtered through a glass filter frit number 3 under inert gas. The filter cake was washed twice with 10 g of heptane and subsequently dried under reduced pressure. This gave 1.7 g of the compound I as a yellowish powder. The 1H-NMR spectrum of the compound indicated the pure rac form.

1. customwhich had been flushed with inert gas
2. customwas provided with stopcock and magnetic stirrer bar
3. filtrationthe reaction mixture was filtered through a glass
4. filtrationfilter frit number 3 under inert gas
5. washThe filter cake was washed twice with 10 g of heptane
6. customsubsequently dried under reduced pressure