反应详情

Into the vial were added tert-butyl 4-(1-((5-bromo-2-chloropyrimidin-4-yl)amino)ethyl)piperidine-1-carboxylate (400 mg, 0.95 mmol) and ethyl but-2-ynoate (128 mg, 1.14 mmol), palladium(II) diacetate (42 mg, 0.19 mmol), lithium chloride (51.8 mg, 1.23 mmol), carbonic acid (393 mg, 2.85 mmol) in N, N-dimethyl formamide. The mixture was degassed for 10 min and refilled with nitrogen, and irradiated in the microwave on a Biotage smith synthesizer at 120° C. for 40 min. The reaction mixture was cooled down and added to water (30 ml), and extracted with ethyl acetate (10 ml×3). The organic layer was dried over sodium sulfate and concentrated. The crude product was purified by column chromatography on silica gel (petroleum/ethyl acetate: 20:1 to 10:1) to give compound ethyl 7-(1-(1-(tert-butoxycarbonyl)piperidin-4-yl)ethyl)-2-chloro-6-methyl-7H-pyrrolo[2,3-d]pyrimidine-5-carboxylate (75 mg, yield: 17.4%) as a yellow oil. LRMS (M+H+) m/z: calcd 450.2. found 451.

1. customThe mixture was degassed for 10 min
2. additionrefilled with nitrogen
3. customirradiated in the microwave on a Biotage smith synthesizer at 120° C. for 40 min
4. temperatureThe reaction mixture was cooled down
5. additionadded to water (30 ml)
6. extractionextracted with ethyl acetate (10 ml×3)
7. dry with materialThe organic layer was dried over sodium sulfate
8. concentrationconcentrated
9. customThe crude product was purified by column chromatography on silica gel (petroleum/ethyl acetate: 20:1 to 10:1)