Multi-step reaction with 5 steps
1: 1) sBuLi / 1) THF, cyclohexane, -78 deg C, 3 h, 2) -78 deg C, 1.5 h
2: 1) sBuLi, hexamethylphosphoramide / 1) THF, cyclohexane, -78 deg C, 2.5 h, 2) -78 deg C, 3.0 h
3: 1) sBuLi, hexamethylphosphoramide / 1) THF, cyclohexane, -78 deg C, 2,5 h, 2) THF, cyclohexane, a) -78 deg C, 3 h, b) 25 deg C, 1.5 h
4: 85 percent / KF, 18-crown-6 / methanol / 13 h / Heating
5: 57 percent / m-chloroperbenzoic acid / CH2Cl2 / 4 h / 0 °C
With
N,N,N,N,N,N-hexamethylphosphoric triamide; potassium fluoride; 18-crown-6 ether; sec.-butyllithium; 3-chloro-benzenecarboperoxoic acid;
In
methanol; dichloromethane;
DOI:10.1021/jo00338a024