Multi-step reaction with 16 steps
1: lithium hydroxide monohydrate; water / tetrahydrofuran / 0.58 h / 20 °C / Inert atmosphere
2: dichloromethane / 1 h / 20 °C / Inert atmosphere
3: dichloromethane / 4 h / 20 °C / Inert atmosphere
4: tetrahydrofuran / 0.67 h / 10 - 20 °C / Inert atmosphere
5: borane-dimethyl sulfide complex; (3aR)-1-methyl-3,3-diphenyl-tetrahydro-pyrrolo[1,2-c][1,3,2]oxazaborole / tetrahydrofuran / 1.5 h / 30 °C / Inert atmosphere
6: dmap; triethylamine / dichloromethane / 10 h / 0 - 20 °C / Inert atmosphere
7: tetrabutyl ammonium fluoride / tetrahydrofuran / 16 h / 20 °C / Inert atmosphere
8: 2,2,6,6-Tetramethyl-1-piperidinyloxy free radical; [bis(acetoxy)iodo]benzene / dichloromethane / 5.5 h / 20 °C / Inert atmosphere
9: methanol; hexane; toluene / 1 h / 20 °C / Inert atmosphere
10: sodium hydrogencarbonate; Dess-Martin periodane / dichloromethane / 1 h / 20 °C / Inert atmosphere
11: trifluoroacetic acid / dichloromethane; water / 0.25 h / 20 °C / Inert atmosphere
12: dimethylsulfide; ozone / dichloromethane / 3 h / -78 - 20 °C
13: dmap; triethylamine / dichloromethane / 2 h / 20 °C / Inert atmosphere
14: 20 wt.% Pd(OH)2 on activated carbon; hydrogen / ethyl acetate / 20 h / 20 °C / 6000.6 Torr
15: dmap; triethylamine / dichloromethane / 0.13 h / 20 °C / Inert atmosphere
16: acetonitrile / 0.08 h / 20 °C / Inert atmosphere
With
dmap; 2,2,6,6-Tetramethyl-1-piperidinyloxy free radical; borane-dimethyl sulfide complex; lithium hydroxide monohydrate; dimethylsulfide; [bis(acetoxy)iodo]benzene; 20 wt.% Pd(OH)2 on activated carbon; tetrabutyl ammonium fluoride; water; hydrogen; sodium hydrogencarbonate; Dess-Martin periodane; ozone; triethylamine; trifluoroacetic acid; (3aR)-1-methyl-3,3-diphenyl-tetrahydro-pyrrolo[1,2-c][1,3,2]oxazaborole;
In
tetrahydrofuran; methanol; hexane; dichloromethane; water; ethyl acetate; toluene; acetonitrile;
DOI:10.1002/anie.201201826