n-butyllithium in tetrahydrofuran; hexane; dichloromethane; chloroform; water

n-butyllithium 1) THF, hexane, -50 deg C, 15 min, 2) -50 deg C, 4 h, then rt, 18 h; Yield given. Multistep reaction;

1: difluoromethyl-diphenyl-phosphine oxide With lithium diisopropyl amide in tetrahydrofuran T=-78°C; 0.833333 h; 2: 3β-acetoxy-pregn-5-en-20-one in tetrahydrofuran Wittig reaction; 1.5 h; Heating;

lithium diisopropyl amide 1) THF, -50 deg C, 30 min, 2) -50 deg C -> rt, then reflux; Yield given. Multistep reaction;

lithium diisopropyl amide 1) THF, -50 deg C, 30 min, 2) -50 deg C -> rt, then reflux; Yield given. Multistep reaction;