Diisopropylethylamine → 5-{3-(Cyanomethyl)-3-[4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl]azetidin-1-yl}-N-[(1S)-2,2,2-trifluoro-1-methylethyl]pyrazine-2-carboxamide

関与物質

反応条件

反応手順

A mixture of 5-chloro-N-[(1S)-2,2,2-trifluoro-1-methylethyl]pyrazine-2-carboxamide (254 mg, 1.00 mmol), {3-[4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl]azetidin-3-yl}acetonitrile HCl salt (325 mg, 1.00 mmol) and N,N-diisopropylethylamine (401 μL, 2.30 mmol) in 1,4-dioxane (5.0 mL) was heated at 100° C. for 2 h. After cooling, the mixture was concentrated under reduced pressure. The residue was purified by flash chromatography on a silica gel column eluting with ethyl acetate in hexane (gradient: 20-80%) to afford the desired product (0.49 g, 97%). LCMS cacld. for C22H28BF3N7O3 (M+1)+: m/z=506.2. Found: 506.1.

情報源と証拠