Multi-step reaction with 11 steps
1.1: 4-methyl-morpholine; isobutyl chloroformate / tetrahydrofuran / 0.5 h / 0 °C
1.2: 4 h / 20 °C
2.1: triethyloxonium hexaflourophosphate / dichloromethane / 48 h / 20 °C
2.2: 24 h / 60 °C
3.1: triethylamine / dichloromethane / 4 h / 0 - 20 °C
4.1: N,N-dimethyl-formamide / 18 h / 100 °C
5.1: sodium hydride / N,N-dimethyl-formamide / 0.25 h / 20 °C
5.2: 18 h / 20 °C
6.1: tetrakis(triphenylphosphine) palladium(0) / N,N-dimethyl-formamide / 4 h / 90 °C
7.1: trifluoroacetic acid / dichloromethane / 1 h / 20 °C
8.1: sodium tris(acetoxy)borohydride / dichloromethane / 20 °C
9.1: triethylamine / dichloromethane / 20 °C
10.1: trifluoroacetic acid / dichloromethane / 2 h / 20 °C
11.1: methanol / Heating / reflux
With
4-methyl-morpholine; sodium tris(acetoxy)borohydride; sodium hydride; triethyloxonium hexaflourophosphate; triethylamine; trifluoroacetic acid; isobutyl chloroformate;
tetrakis(triphenylphosphine) palladium(0);
In
tetrahydrofuran; methanol; dichloromethane; N,N-dimethyl-formamide;