反应详情

To a solution of methyl 4-chloro-3,5-dinitrobenzoate (D25a) (5.0 g, 19.2 mmol, 1 equiv) in MeOH (300 ml) was added 2-chloroethylamine hydrochloride (4.64 mg, 40 mmol, 2.1 equiv) and NEt3 (5.5 ml, 40 mmol, 2.1 equiv) and the resulting mixture was refluxed for 5 min then cooled to room temperature. Most of the solvent was evaporated in vacuo and the residue filtered off to give methyl 4-[(2-chloroethyl)amino]-3,5-dinitrobenzoate (D208) (9 g, 156%) as a yellow solid which was used in the next step without further purification. [M+H]+=304.1, RT=3.06 min.

1. temperaturethe resulting mixture was refluxed for 5 min
2. customMost of the solvent was evaporated in vacuo
3. filtrationthe residue filtered off