bis(cyclopentadienyl)titanium dichloride; 2-methylpropylmagnesium bromide in diethyl ether T=20°C; Reduction; 48 h;

1: 98 percent / n-BuLi; HMPA; CaCO3 / tetrahydrofuran; hexane / 66 h / -78 - 20 °C 2: 82 percent / i-BuMgBr; Cp2TiCl2 / diethyl ether / 48 h / 20 °C View Scheme

perchloric acid in tetrahydrofuran 0.0166667 h; Yield given;