n-butyllithium in tetrahydrofuran; hexane -78 deg C, 0.5 hr. then -78 deg C to 20 deg C, 0.5 hr. (one pot);

1: 92 percent / zinc chloride / CH2Cl2 / 2 h / 20 °C 2: 92 percent / n-BuLi / tetrahydrofuran; hexane / -78 deg C, 0.5 hr. then -78 deg C to 20 deg C, 0.5 hr. (one pot) 3: 74 percent / n-BuLi / tetrahydrofuran; hexane / -78 deg C, 0.5 hr. then -78 deg C to 20 deg C, 0.5 hr. (one pot) View Scheme

petroleum fraction obtained from the dehydrogenation of a kerosene; 40percent dealuminified Y zeolite, Si/Al ratio 45 in extrudate form T=135°C; P=30003 Torr; Product distribution / selectivity;

1: 92 percent / n-BuLi / tetrahydrofuran; hexane / -78 deg C, 0.5 hr. then -78 deg C to 20 deg C, 0.5 hr. (one pot) 2: 74 percent / n-BuLi / tetrahydrofuran; hexane / -78 deg C, 0.5 hr. then -78 deg C to 20 deg C, 0.5 hr. (one pot) View Scheme

0.25 h; Heating; MechanismProduct distribution;