HCID 178461830, compound → HCID 178461830, compound

Participants

Reaction Conditions

Reaction Steps

At the same time, 65 mg (0.15 mmol) of isopropyl-(9-fluorenyl)cyclopentadienylzirconium dichloride are dissolved in 40 ml of toluene and added dropwise to the suspension. The cold reaction mixture is introduced into a microwave apparatus. While stirring in an inert gas stream at a microwave frequency of 2.45 GHz and microwave power of 500 W, the mixture is heated to 80° C. over a period of 15 minutes, the suspension taking on a red color. The radiation power is adjusted so that the suspension is maintained at this temperature for one hour (250 W, pulsed). The mixture is subsequently filtered and the red dye is washed three times with 50 ml of toluene. Analysis of the pale red filtrate gives a zirconium content of 0.9 mg (corresponds to 4.3 mg of isopropyl-(9-fluorenyl)cyclopentadienylzirconium dichloride). The solid is dried in vacuo. 3 g of free-flowing violet supported catalyst containing 20 mg of zirconocene per gram of catalyst are obtained.

Provenance & Evidence