反应详情

温度

0 °C

To an ice-cold solution of ethyl 4-(5-bromopyrimidin-2-ylamino)-1-methylcyclohexanecarboxylate (0.30 g, 0.88 mmol) in THF (10 mL) was added NaH (0.053 g, 1.32 mmol, 60% dispersion in mineral oil) portion wise and the mixture stirred at 0° C. for 10 min followed by drop wise addition of MeI (0.066 ml, 1.06 mmol). The mixture was heated up to 65° C. for 6-8 h. After completion (by TLC), the reaction was cooled up to 0° C. and quenched with ice-cold water (20 mL), extracted with EtOAc (2×50 mL) and the combined organics washed with water, brine and dried over Na2SO4. The crude residue was purified over 100-200 M silica-gel using 2% EtOAc:hexane to obtain the desired product as a yellow liquid (0.074 g, 24% yield). 1H NMR (DMSO-d6): δ 8.42 (s, 2H), 4.51 (m, 1H), 4.15 (q, J=6.80 Hz, 2H), 2.85 (s, 3H), 2.15 (m, 2H), 1.52 (m, 4H), 1.36 (m, 2H), 1.29 (t, J=6.80 Hz, 3H) and 1.21 (s, 3H).

1. temperatureThe mixture was heated up to 65° C. for 6-8 h
2. temperatureAfter completion (by TLC), the reaction was cooled up to 0° C.
3. customquenched with ice-cold water (20 mL)
4. extractionextracted with EtOAc (2×50 mL)
5. washthe combined organics washed with water, brine
6. dry with materialdried over Na2SO4
7. customThe crude residue was purified over 100-200 M silica-gel