Multi-step reaction with 8 steps
1: ammonia / methanol; tetrahydrofuran / 3.05 h / 0 °C
2: potassium carbonate / dichloromethane / 16 h / 20 °C / Inert atmosphere
3: silver trifluoromethanesulfonate / dichloromethane / 1 h / -5 °C / Inert atmosphere; Molecular sieve
4: sodium methylate / methanol; dichloromethane / 20 °C / Inert atmosphere
5: 2,2,6,6-Tetramethyl-1-piperidinyloxy free radical; [bis(acetoxy)iodo]benzene / dichloromethane; water / 6 h / 20 °C
6: pyridine / chloroform / 1.5 h / 20 °C / Inert atmosphere
7: 2,3-dicyano-5,6-dichloro-p-benzoquinone / dichloromethane; water / 4 h / 20 °C
8: tris(dimethylamino)sulfonium trimethylsilyldifluoride / N,N-dimethyl-formamide / 16 h / 20 °C
With
pyridine; 2,2,6,6-Tetramethyl-1-piperidinyloxy free radical; [bis(acetoxy)iodo]benzene; tris(dimethylamino)sulfonium trimethylsilyldifluoride; ammonia; sodium methylate; silver trifluoromethanesulfonate; potassium carbonate; 2,3-dicyano-5,6-dichloro-p-benzoquinone;
In
tetrahydrofuran; methanol; dichloromethane; chloroform; water; N,N-dimethyl-formamide;
DOI:10.1021/ja3090065