反应详情

To a solution of bis(pentamethylcyclopentadienyl)zirconium dichloride (0.865 g, 2.001 mmol) and pivalic acid (0.685 g, 6.710 mmol) in toluene (30 ml) at 40° C. was added triethylamine (0.726 g, 7.174 mmol) with stirring. A white precipitate formed immediately which was removed by filtration. The title compound was isolated as an off-white powder in 90% by evaporating the solvent and excess pivalic acid under vacuum at 65° C. The title compound such prepared exhibited purity above 98% based on NMR results. 1H NMR (toluene d8) δ1.83 (s, 30H), 1.30 (s, 18H).

1. customA white precipitate formed immediately which
2. customwas removed by filtration