Multi-step reaction with 4 steps
1.1: sodium tris(acetoxy)borohydride / dichloromethane / 12.25 h / 25 °C / Molecular sieve; Inert atmosphere
2.1: benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride / dichloromethane / 0.5 h / 0 - 25 °C / Inert atmosphere
2.2: 0.5 h / 0 - 25 °C
3.1: N-ethyl-N,N-diisopropylamine; 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane-2,4,6-trioxide / tetrahydrofuran; ethyl acetate / 2 h / 0 - 50 °C
4.1: hydroxylamine / water; ethanol / 12 h / 25 °C
With
hydroxylamine; sodium tris(acetoxy)borohydride; benzotriazol-1-ol; 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane-2,4,6-trioxide; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; N-ethyl-N,N-diisopropylamine;
In
tetrahydrofuran; ethanol; dichloromethane; water; ethyl acetate;
DOI:10.1021/ja412298c