n-butyllithium in diethyl ether; hexane T=-100°C; 0.25 h;

n-butyllithium in diethyl ether; hexane T=-100°C; 0.25 h;

1: 89 percent / butyllithium / hexane; tetrahydrofuran / -75 °C 2: 92 percent / sec-butyllithium; bromine / cyclohexane; tetrahydrofuran / 0.75 h 3: 82 percent / diisopropylamine; butyllithium / hexane; tetrahydrofuran / -75 °C 4: butyllithium / hexane; diethyl ether / 0.25 h / -100 °C View Scheme

1: 89 percent / butyllithium / hexane; tetrahydrofuran / -75 °C 2: 92 percent / sec-butyllithium; bromine / cyclohexane; tetrahydrofuran / 0.75 h 3: 82 percent / diisopropylamine; butyllithium / hexane; tetrahydrofuran / -75 °C 4: butyllithium / hexane; diethyl ether / 0.25 h / -100 °C View Scheme

1: 92 percent / sec-butyllithium; bromine / cyclohexane; tetrahydrofuran / 0.75 h 2: 82 percent / diisopropylamine; butyllithium / hexane; tetrahydrofuran / -75 °C 3: butyllithium / hexane; diethyl ether / 0.25 h / -100 °C View Scheme

1: 82 percent / diisopropylamine; butyllithium / hexane; tetrahydrofuran / -75 °C 2: butyllithium / hexane; diethyl ether / 0.25 h / -100 °C View Scheme

1: diisopropylamine; butyllithium / hexane; tetrahydrofuran / 2 h / -75 °C 2: butyllithium / hexane; diethyl ether / 0.25 h / -100 °C View Scheme