Titanocene dichioride → Dimethyl titanocene

A solution of 2.49 g (10.0 mmol) of titanocene dichloride in 50 ml of ether in the dark at 0° C. was treated with 17.5 ml of 1.4M methyllithium solution in ether maintaining the internal temperature below 5° C. The resulting yellow/orange mixture was stirred at room temperature for 30 minutes and the reaction was quenched by slowly adding 25 g of ice. The quenched reaction mixture was diluted with 50 ml of ether and 25 ml of water and the layers were separated. The organic layer was dried over magnesium sulfate and concentrated it vacuo to afford 2.03 g (98%) of the title compound as a light-sensitive solid. The dimethyl titanocene could be stored as a solution in toluene at 0° C. for at least 2 weeks without apparent chemical degradation. 1H NMR (200 MHz, CDCl3) δ 0.15 (6H, s), 6.06 (10H, s).

1. customthe reaction was quenched
2. additionby slowly adding 25 g of ice
3. customThe quenched reaction mixture
4. customthe layers were separated
5. dry with materialThe organic layer was dried over magnesium sulfate
6. concentrationconcentrated it vacuo

ORD record

ord-8e6657796bcc45e99db5122b69d054e6

Source dataset

uspto-grants-2000_10

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US06140324