Trifluoroacetic acid → N-(2-aminoethyl)-2-hydroxy-N-methylbenzamide
反応式
[OH:1][C:2]1[CH:21]=[CH:20][CH:19]=[CH:18][C:3]=1[C:4]([N:6]([CH2:8][CH2:9][NH:10]C(=O)OC(C)(C)C)[CH3:7])=[O:5].FC(F)(F)C(O)=O>C(Cl)Cl>[NH2:10][CH2:9][CH2:8][N:6]([CH3:7])[C:4](=[O:5])[C:3]1[CH:18]=[CH:19][CH:20]=[CH:21][C:2]=1[OH:1]参加物
4
反応条件
- 温度
- 0 °C
実験手順
To a solution of tert-butyl 2-(2-hydroxy-N-methylbenzamido)ethylcarbamate (0.2 g, 0.68 mmol) in CH2Cl2 (5 mL) at 0° C. was added trifluoroacetic acid (1.8 mL, 23.4 mmol). The mixture was stirred (0° C., 16 h), concentrated under reduced pressure and neutralized with saturated NH3 in CH3OH. The mixture was concentrated under reduced pressure to afford N-(2-aminoethyl)-2-hydroxy-N-methylbenzamide as a colorless oil (0.5 g). This compound was used in the next step without further purification. Mass calculated for C10H14N2O2=194.23; found: [M+H]+=195.1.