methyllithium in diethyl ether 1.) room temp., 5 h; 2.) 0 deg C, 30 min, then -> room temp., overnight; Yield given;

n-butyllithium in tetrahydrofuran; ethylene glycol dimethyl ether; hexane 1:1 mixt. of 1- and 2-(n-C4H9)C5H5 was dissolved in THF and treated with n-BuLi in hexane followed by ZrCl4 in glyme; recrystd. from heptane; elem. anal.;