n-butyllithium in hexane 3-bromo-3-ethylpentane (1 equiv.) and TMTH (1 equiv.) in hexane cooled to 0°C under Ar, n-BuLi (1 equiv., 2.40 M in hexane) added, stirred for 15 min, quenched with water; analyzed by GC;
n-butyllithium in hexane n-BuLi (0.81 mmol, 0.70 M soln. in hexane) added to mixt. of 1-bromoheptane (0.81 mmol), 3-bromo-3-ethylpentane(0.81 mmol), and TMTH (0.81 mmol) in hexane under Ar, after 15 min of stirring at 0°C quenched with water; analyzed by GC;
