methyllithium in tetrahydrofuran; diethyl ether byproducts: ((CH3)3Si)3C(CH2)4OH; a mixture of (Me3Si)3CH in THF and MeLi in ether was stirred for 20 h at room temp., then refluxed for 0.5 h, a cooled soln. was treated with Me3SiOEt and added to a soln. of AlCl3 in ether under Ar at room temp. and refluxed for 3 h; evapn., extn. (heptane), concn.; elem. anal.;