zirconocene dichloride; methyllithium; diisobutylaluminium hydride 1.) CH2Cl2, reflux, 24 h; 2.) CH2Cl2, Et2O, 0 deg C, 30 min; 3.) CH2Cl2, 0 deg C -> r.t., 2 h; Yield given. Multistep reaction;

zirconocene dichloride; methyllithium; diisobutylaluminium hydride 1.) CH2Cl2, reflux, 24 h; 2.) CH2Cl2, Et2O, 0 deg C, 30 min; 3.) CH2Cl2, 0 deg C -> r.t., 2 h; Yield given. Multistep reaction;

zirconocene dichloride; methyllithium; diisobutylaluminium hydride 1.) CH2Cl2, reflux, 24 h; 2.) CH2Cl2, Et2O, 0 deg C, 30 min; 3.) CH2Cl2, 0 deg C -> r.t., 2 h; Yield given. Multistep reaction;

zirconocene dichloride; methyllithium; diisobutylaluminium hydride 1.) CH2Cl2, reflux, 24 h; 2.) CH2Cl2, Et2O, 0 deg C, 30 min; 3.) CH2Cl2, 0 deg C -> r.t., 2 h; Yield given. Multistep reaction;