Multi-step reaction with 6 steps
1.1: 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide; 1-hydroxybenzotriazole; N,N-diisopropylethylamine / dimethylformamide / 0 °C
1.2: dimethylformamide / 20 °C
2.1: HCl / dioxane / 20 °C
3.1: 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide; 1-hydroxybenzotriazole; N,N-diisopropylethylamine / dimethylformamide / 0 °C
3.2: dimethylformamide / 20 °C
4.1: H2 / Pd/C / methanol
5.1: PS-carbodiimide resin; N,N-dimethylacetamide; 1-hydroxy-7-azabenzotriazole / 1,2-dichloro-ethane / 18 h / 20 °C
6.1: triisopropylsilane; aq. TFA / 1 h
With
hydrogenchloride; 1-hydroxy-7-aza-benzotriazole; PS-carbodiimide resin; chlorotriisopropylsilane; N,N-dimethyl acetamide; hydrogen; benzotriazol-1-ol; N-(3-dimethylaminopropyl)-N-ethylcarbodiimide; N-ethyl-N,N-diisopropylamine; trifluoroacetic acid;
palladium on activated charcoal;
In
1,4-dioxane; methanol; 1,2-dichloro-ethane; N,N-dimethyl-formamide;
DOI:10.1021/jm040037k