tert.-butyl lithium in diethyl ether; pentane T=-78°C; 0.0833333 h;

methanol; N,N,N',N,-tetramethylethylenediamine; tert.-butyl lithium 1.) pentane, diethyl ether, -80 deg C, stirred 5 min 2.) room temp. 4 h; Yield given. Multistep reaction;