反应详情

To a mixture of 5-chloro-N-(3,4-dimethoxyphenyl)thiazolo[5,4-d]pyrimidin-7-amine (200 mg, 0.62 mmol), methyl piperidine-4-carboxylate (177 mg, 1.24 mmol), Cs2CO3 (404 mg, 1.24 mmol), X-Phos (20 mg, 0.042 mmol), Pd(dba)2 (20 mg, 0.035 mmol) in 30 mL of dioxane were stirred at 100° for 18 hours under N2 atmosphere. The excess of dioxane was removed under reduced pressure and the residue was purified by silica gel chromatography (eluting with a mixture of petroleum ether and ethyl acetate=3:1) to give methyl 1-(7-(3,4-dimethoxyphenylamino)thiazolo[5,4-d]pyrimidin-5-yl)piperidine-4-carboxylate (150 mg, 56%) as a yellow solid. LC-MS: 430 [M+H]+, tR=1.63 min

1. customThe excess of dioxane was removed under reduced pressure
2. customthe residue was purified by silica gel chromatography (
3. washeluting with a mixture of petroleum ether and ethyl acetate=3:1)