反应详情

TFA (40.7 mL, 548 mmol) was added to a solution of N-(tert-butyloxycarbonyl)-3-methoxy-2-methylaniline, in dichloromethane (500 mL). After 2 h at room temperature, TFA (40.7 mL, 548 mmol) was added and the resulting mixture was stirred at room temperature overnight. Then, volatiles were evaporated. The residue was triturated with toluene (100 mL) and diisopropylether (250 mL), filtered off and washed with diisopropyl ether (100 mL) to give 56.3 g of the title product as a TFA salt: m/z=138 (M+H)+. The TFA salt was transformed to the free aniline by treatment with NaHCO3.

1. customThen, volatiles were evaporated
2. customThe residue was triturated with toluene (100 mL) and diisopropylether (250 mL)
3. filtrationfiltered off
4. washwashed with diisopropyl ether (100 mL)