Multi-step reaction with 9 steps
1.1: potassium hydroxide; water / ethanol / 1 h / 80 °C
2.1: thionyl chloride / 2 h / 70 °C
3.1: N-ethyl-N,N-diisopropylamine / tetrahydrofuran / 0.83 h / -10 °C
4.1: trichlorophosphate / toluene / Heating / reflux
4.2: 0 °C
5.1: triethylamine / dichloromethane; toluene / 0.5 h / 0 °C
6.1: Resolution of racemate
7.1: triethylamine / dichloromethane / 0.5 h / 0 - 20 °C
8.1: benzotriazol-1-ol; O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; N-ethyl-N,N-diisopropylamine / N,N-dimethyl-formamide / 0.25 h
8.2: 1 h
9.1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 0.25 h / 0 °C
With
potassium hydroxide; thionyl chloride; water; benzotriazol-1-ol; O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; triethylamine; N-ethyl-N,N-diisopropylamine; 3-chloro-benzenecarboperoxoic acid; trichlorophosphate;
In
tetrahydrofuran; ethanol; dichloromethane; N,N-dimethyl-formamide; toluene;