Multi-step reaction with 7 steps
1.1: triethylamine / dichloromethane / 18.3 h / 0 - 20 °C
2.1: N,N,N,N,-tetramethylethylenediamine; sec.-butyllithium / hexane; diethyl ether / -60 - 20 °C
2.2: 0.5 h / -78 °C
3.1: acetic acid / 1,1-dichloroethane / 3 h / 20 °C
4.1: sodium tris(acetoxy)borohydride / 1,1-dichloroethane; acetic acid / 18 h / 20 °C
5.1: trifluoroacetic acid / dichloromethane / 2 h / 0 - 20 °C
6.1: N-ethyl-N,N-diisopropylamine; O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate / dichloromethane / 0.5 h / 20 °C
6.2: 18 h / 20 °C
7.1: DEA; Phenomenex LUX 5u cellulose-Phenomenex LUX 5u cellulose-DEA; Phenomenex LUX 5u cellulose-1 / hexane; ethanol / Resolution of racemate
With
N,N,N,N,-tetramethylethylenediamine; sec.-butyllithium; sodium tris(acetoxy)borohydride; O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; acetic acid; triethylamine; N-ethyl-N,N-diisopropylamine; trifluoroacetic acid;
In
diethyl ether; 1,1-dichloroethane; ethanol; hexane; dichloromethane; acetic acid;