反应详情

温度

0 °C

To a suspension of ethyl 4-((3-((tert-butoxycarbonyl)amino)phenyl)amino)-2-(methylthio)pyrimidine-5-carboxylate (50c) (340 g, 0.84 mol) in THF (200 mL) at −40° C. was added LiAlH4 (2.57 L of 1.0 M solution in THF, 2.57 mol) dropwise. The reaction mixture was stirred at 0° C. for 13 h, then cooled to −20° C. and carefully quenched with solid Na2SO4.10H2O. The reaction mixture was filtered and rinsed with 2×150 mL of EtOAc. The filtrate was concentrated affording crude tert-butyl (3-((5-(hydroxymethyl)-2-(methylthio)pyrimidin-4-yl)amino)phenyl)carbamate (50d) (280 g, 92% yield). m/z (ESI, +ve ion) 363.0 (M+1)+.

1. temperaturecooled to −20° C.
2. customcarefully quenched with solid Na2SO4.10H2O
3. filtrationThe reaction mixture was filtered
4. washrinsed with 2×150 mL of EtOAc
5. concentrationThe filtrate was concentrated