Multi-step reaction with 6 steps
1: 1.) lithium diisopropylamine (LDA) / 1.) THF, -78 deg C, 20 min, 2.) THF, a) -78 deg C, 20 min, b) RT, 1 h
2: 68 percent / diisobutylammonium hydride (DIBAH) / CH2Cl2; hexane / 1 h / -50 °C
3: MgSO4 / diethyl ether / 1 h / 0 °C
4: molecular sieves 3A, N,N-diethylaniline / toluene / 1.) -78 deg C, 1 h, 2.) RT, 2 h
5: 56 percent / Bu3SnH, AIBN / benzene / 2 h / Heating
6: 62 percent / Bu3SnH, AIBN / benzene / 1.5 h / Heating
With
Diisobutylammonium hydride; 2,2'-azobis(isobutyronitrile); 3 A molecular sieve; tri-n-butyl-tin hydride; magnesium sulfate; N,N-diethylaniline; lithium diisopropyl amide;
In
diethyl ether; hexane; dichloromethane; toluene; benzene;
DOI:10.1016/0040-4020(96)00849-6