Multi-step reaction with 8 steps
1.1: sodium hydride / diethyl ether / 0.5 h / 20 °C / Inert atmosphere
1.2: 6 h / 20 °C / Inert atmosphere
2.1: camphor-10-sulfonic acid / dichloromethane; cyclohexane / 20 °C / Inert atmosphere
3.1: potassium carbonate / methanol / 1 h / 20 °C / Inert atmosphere
4.1: 2,2,6,6-Tetramethyl-1-piperidinyloxy free radical; [bis(acetoxy)iodo]benzene / dichloromethane; water / 2 h / 20 °C / Inert atmosphere
5.1: triethylamine; dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride / dichloromethane / 20 °C / Inert atmosphere
6.1: tetrahydrofuran / 3 h / -78 °C / Inert atmosphere
7.1: (3aR)-1-methyl-3,3-diphenyl-tetrahydro-pyrrolo[1,2-c][1,3,2]oxazaborole; borane-THF / tetrahydrofuran; toluene / 6 h / -78 - 20 °C / Inert atmosphere
8.1: N-ethyl-N,N-diisopropylamine / dichloromethane / 0.25 h / 0 °C / Inert atmosphere
8.2: 12 h / 20 °C
With
dmap; borane-THF; 2,2,6,6-Tetramethyl-1-piperidinyloxy free radical; [bis(acetoxy)iodo]benzene; camphor-10-sulfonic acid; sodium hydride; potassium carbonate; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; triethylamine; N-ethyl-N,N-diisopropylamine; (3aR)-1-methyl-3,3-diphenyl-tetrahydro-pyrrolo[1,2-c][1,3,2]oxazaborole;
In
tetrahydrofuran; methanol; diethyl ether; dichloromethane; cyclohexane; water; toluene;
DOI:10.1002/ejoc.201301365