反应详情

温度

60 °C

A mixture of methyl 3-amino-4-chloro-2-[(3-hydroxypropyl)amino]benzoate (500 mg, 1.94 mmol) and 2-isothiocyanato-3,5-dimethylpyrazine (866 mg, 5.24 mmol) in tetrahydrofuran (4.0 mL) was stirred at 60° C. for 6 hr. The mixture was concentrated in vacuo, and the residue was purified by flash column chromatography on silica gel eluting with a 50-100% ethyl acetate/n-hexane gradient mixture. The filtrate was concentrated in vacuo to give methyl 4-chloro-3-{[(3,5-dimethylpyrazin-2-yl)carbamothioyl]amino}-2-[(3-hydroxypropyl)amino]benzoate as a yellow solid (430 mg).

1. concentrationThe mixture was concentrated in vacuo
2. customthe residue was purified by flash column chromatography on silica gel eluting with a 50-100% ethyl acetate/n-hexane gradient mixture
3. concentrationThe filtrate was concentrated in vacuo