Multi-step reaction with 12 steps
1.1: borane-THF / tetrahydrofuran / 4 h / 0 - 20 °C / Inert atmosphere
1.2: 12 h / 0 - 20 °C
2.1: triethylamine; trimethylamine hydrochloride / dichloromethane / 1 h / 0 - 20 °C / Inert atmosphere
3.1: tetra-(n-butyl)ammonium iodide; sodium azide / N,N-dimethyl-formamide / 12 h / 0 - 20 °C / Inert atmosphere
4.1: zinc dibromide / methanol; dichloromethane / 30 h / 0 - 20 °C / Inert atmosphere
5.1: triethylamine; sulfur trioxide pyridine complex; dimethyl sulfoxide / 0.5 h / 20 °C / Inert atmosphere
6.1: triethylphosphine / toluene; tetrahydrofuran / 30 h / 0 - 20 °C / Inert atmosphere
7.1: triethylphosphine / toluene / 48 h / 70 °C / Inert atmosphere
8.1: dmap; triethylamine / acetonitrile / 12 h / 20 °C / Inert atmosphere
9.1: tri-n-butyl-tin hydride; 2,2'-azobis(isobutyronitrile) / 2,2,2-trifluoroethanol / 1 h / 78 °C / Inert atmosphere
10.1: morpholine; tetrakis(triphenylphosphine) palladium(0) / tetrahydrofuran / 0.5 h / 20 °C / Inert atmosphere
11.1: sodium hydrogencarbonate; 3-[(diethoxyphosphinyl)oxy]-1,2,3-benzotriazin-4(3H)-one / N,N-dimethyl-formamide; dichloromethane / 24 h / 0 - 20 °C / Inert atmosphere
12.1: morpholine; tetrakis(triphenylphosphine) palladium(0) / tetrahydrofuran / 0.5 h / 20 °C / Inert atmosphere
With
morpholine; dmap; tetrakis(triphenylphosphine) palladium(0); sodium azide; borane-THF; 2,2'-azobis(isobutyronitrile); tri-n-butyl-tin hydride; sulfur trioxide pyridine complex; trimethylamine hydrochloride; tetra-(n-butyl)ammonium iodide; sodium hydrogencarbonate; dimethyl sulfoxide; triethylamine; 3-[(diethoxyphosphinyl)oxy]-1,2,3-benzotriazin-4(3H)-one; zinc dibromide; triethylphosphine;
In
tetrahydrofuran; methanol; dichloromethane; 2,2,2-trifluoroethanol; N,N-dimethyl-formamide; toluene; acetonitrile;
7.1: |Ugi Condensation;
DOI:10.1021/ol403319m