Multi-step reaction with 9 steps
1.1: N-ethyl-N,N-diisopropylamine / acetonitrile / 16 h / 20 °C
2.1: acetic acid; sodium tris(acetoxy)borohydride / 1,2-dichloro-ethane / 6 h / 20 °C / Inert atmosphere
3.1: sodium hydroxide / 1,4-dioxane; water / 3 h / 10 - 20 °C
4.1: zinc; ammonium chloride / methanol / 2 h / 50 °C
5.1: ethanol / 16 h / 20 °C / Inert atmosphere
6.1: HATU; N-ethyl-N,N-diisopropylamine / N,N-dimethyl-formamide / 12 h / 0 - 20 °C / Inert atmosphere
7.1: dichloromethane / 16 h / 0 - 20 °C / Inert atmosphere
8.1: toluene; tetrahydrofuran / 1 h / -30 - 20 °C / Inert atmosphere
8.2: 0.25 h / 60 °C
9.1: hydrogen bromide; acetic acid / 1 h / 0 - 20 °C
9.2: 5 °C / pH Ca. 7 - 8
With
hydrogen bromide; sodium tris(acetoxy)borohydride; ammonium chloride; acetic acid; N-ethyl-N,N-diisopropylamine; HATU; sodium hydroxide; zinc;
In
tetrahydrofuran; 1,4-dioxane; methanol; ethanol; dichloromethane; water; 1,2-dichloro-ethane; N,N-dimethyl-formamide; toluene; acetonitrile;