反应详情

温度

100 °C

A mixture of (S)-1-(6-bromo-2-methyl-5-propoxy-3,4-dihydroquinolin-1(2H)-yl)ethanone (0.050 g, 0.153 mmol), tert-butyl 4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl)piperidine-1-carboxylate (0.058 g, 0.153 mmol), chloro(2-dicyclohexylphosphino-2′,4′,6′-tri-i-propyl-1,1′-biphenyl)(2′-amino-1,1′-biphenyl-2-yl) palladium(II) (XPhos 2nd generation precatalyst) (0.012 g, 0.015 mmol), and cesium carbonate (0.150 g, 0.460 mmol) in 1,4-dioxane (2.0 mL) and water (0.40 mL) was heated in the microwave at 100° C. for 2.5 h. The reaction mixture was filtered through Celite and concentrated to afford an orange oil. This material was purified via column chromatography on silica gel (Biotage 25 g column, gradient elution with 50-100% ethyl acetate-hexane) to afford (5)-tert-butyl 4-(4-(1-acetyl-2-methyl-5-propoxy-1,2,3,4-tetrahydroquinolin-6-yl)-1H-pyrazol-1-yl)piperidine-1-carboxylate (0.063 g, 83%) as an off-white solid. MS (ESI, pos. ion) m/z 497 [M+H]+

1. filtrationThe reaction mixture was filtered through Celite
2. concentrationconcentrated
3. customto afford an orange oil
4. customThis material was purified via column chromatography on silica gel (Biotage 25 g column, gradient elution with 50-100% ethyl acetate-hexane)