Multi-step reaction with 5 steps
1: 92 percent / ethyldiisopropylamine; 2-(1H-benzotriazol-1-yl)-1,1,3,3-tetramethyluronium BF4 / CH2Cl2 / 20 °C
2: 100 percent / trifluoroacetic acid; anisole / CH2Cl2
3: 42 percent / ethyldiisopropylamine; 2-(1H-benzotriazol-1-yl)-1,1,3,3-tetramethyluronium BF4; 2-(1H-7-azabenzotriazol-1-yl)-1,1,3,3-tetramethyluronium PF6 / 3-(diethoxyphosphoryloxy)-3H-benzo[d][1,2,3]triazin-4-one / acetonitrile / 20 °C
4: HCl; anisole / tetrahydrofuran
5: 20 percent / ethyldiisopropylamine; 2-(1H-benzotriazol-1-yl)-1,1,3,3-tetramethyluronium BF4; 2-(1H-7-azabenzotriazol-1-yl)-1,1,3,3-tetramethyluronium PF6 / 3-(diethoxyphosphoryloxy)-3H-benzo[d][1,2,3]triazin-4-one / acetonitrile; tetrahydrofuran; CH2Cl2
With
hydrogenchloride; O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; methoxybenzene; N-ethyl-N,N-diisopropylamine; HATU; trifluoroacetic acid;
3-[(diethoxyphosphinyl)oxy]-1,2,3-benzotriazin-4(3H)-one;
In
tetrahydrofuran; dichloromethane; acetonitrile;
DOI:10.1021/jo061830j