反应详情

温度

110 °C

A mixture of {4-[3-(6-bromo-pyridin-2-yl)-imidazo[1,2-a]pyrazin-8-ylamino]-cyclohexyl}-carbamic acid tert-butyl ester (from Example 40 supra) (0.244 g, 0.5 mmol), thiophen-2-yl-methylamine (0.113 g, 1.0 mmol), Pd2(dba)3 (30 mg), Davephos (40 mg), NaOtBu (100 mg, 0.1 mmol) in dioxane (15 mL) in a sealed tube was bubbled with N2 for several minutes and then heated under N2 at 110° C. for 16 hour. The solution was then cooled to room temperature and filtered. The filtrate was concentrated under reduced pressure. The residue was purified first by chromatography (CH2Cl2:MeOH, 100:1), then by preparative-HPLC to give [4-(3-{6-[(thiophen-2-ylmethyl)-amino]-pyridin-2-yl}-imidazo[1,2-a]pyrazin-8-ylamino)-cyclohexyl]-carbamic acid tert-butyl ester. (Yield 100 mg, 38%). LC-MS: [M+H]+ 520.

1. customwas bubbled with N2 for several minutes
2. temperatureThe solution was then cooled to room temperature
3. filtrationfiltered
4. concentrationThe filtrate was concentrated under reduced pressure
5. customThe residue was purified first by chromatography (CH2Cl2:MeOH, 100:1)