Multi-step reaction with 7 steps
1.1: 4-methyl-morpholine; isopropyl chloroformate / toluene; tetrahydrofuran / 0.83 h / 0 °C
1.2: 2 h / 0 - 20 °C
2.1: borane-THF / tetrahydrofuran / 4 h / Reflux
2.2: 0.5 h / Reflux
3.1: potassium acetate / methanol / 1 h / 150 °C / microwave irradiation
4.1: boron tribromide / dichloromethane / 2 h / 20 °C / Cooling with ice-water
4.2: Cooling with ice
5.1: water; lithium hydroxide monohydrate / 1,4-dioxane / Reflux
5.2: 20 °C / pH ~ 2 - 4
6.1: triethylamine; benzotriazol-1-ol; O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate / N,N-dimethyl-formamide / 20 °C
7.1: trifluoroacetic acid / dichloromethane / 2 h / 20 °C
7.2: 20 °C
With
4-methyl-morpholine; borane-THF; lithium hydroxide monohydrate; water; potassium acetate; boron tribromide; benzotriazol-1-ol; O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; isopropyl chloroformate; triethylamine; trifluoroacetic acid;
In
tetrahydrofuran; 1,4-dioxane; methanol; dichloromethane; N,N-dimethyl-formamide; toluene;