Multi-step reaction with 5 steps
1.1: O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; benzotriazol-1-ol; N-ethyl-N,N-diisopropylamine / N,N-dimethyl-formamide / 0.08 h / Inert atmosphere
1.2: 3 h / 20 °C / Inert atmosphere
2.1: trifluoroacetic acid / dichloromethane / 3.5 h / 0 °C / Inert atmosphere
3.1: dmap; dicyclohexyl-carbodiimide / dichloromethane / 3 h / 20 °C / Inert atmosphere
4.1: chlorotriisopropylsilane; trifluoroacetic acid / dichloromethane / 0.5 h / 20 °C / Inert atmosphere
5.1: N-ethyl-N,N-diisopropylamine; HATU / N,N-dimethyl-formamide / 0.08 h / 20 °C / Inert atmosphere
5.2: 4.5 h / 20 °C / Inert atmosphere
With
dmap; chlorotriisopropylsilane; benzotriazol-1-ol; O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; N-ethyl-N,N-diisopropylamine; dicyclohexyl-carbodiimide; HATU; trifluoroacetic acid;
In
dichloromethane; N,N-dimethyl-formamide;
DOI:10.1021/jo3027643