Multi-step reaction with 5 steps
1.1: O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; N-ethyl-N,N-diisopropylamine / N,N-dimethyl-formamide / 0.5 h / Inert atmosphere
1.2: 20 °C / Inert atmosphere
2.1: triethylsilane / dichloromethane / 3 h / 0 - 20 °C
3.1: O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; N-ethyl-N,N-diisopropylamine / N,N-dimethyl-formamide / 0.5 h / Inert atmosphere
3.2: 20 °C / Inert atmosphere
4.1: lithium hydroxide / tetrahydrofuran; water / 2 h / 0 - 20 °C
4.2: pH 3
5.1: 1-hydroxy-pyrrolidine-2,5-dione; dicyclohexyl-carbodiimide / dichloromethane / 0 - 20 °C / Inert atmosphere
5.2: 4 h / -15 - 20 °C / Inert atmosphere
With
triethylsilane; 1-hydroxy-pyrrolidine-2,5-dione; O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; N-ethyl-N,N-diisopropylamine; dicyclohexyl-carbodiimide; lithium hydroxide;
In
tetrahydrofuran; dichloromethane; water; N,N-dimethyl-formamide;
DOI:10.1002/hlca.201100243