Potassium tert-butoxide → 5-chloro-2-(1-methylcyclopropyl)-1H-pyrrolo[2,3-c]pyridine

関与物質

反応条件

反応手順

To a solution of 6-chloro-4-((1-methylcyclopropyl)ethynyl)pyridin-3-amine (3.0 g, 15 mmol) in DMF (50 mL) was added t-BuOK (3.3 g, 29 mmol) under N2 atmosphere. The mixture was heated at 80° C. overnight and quenched with H2O (100 mL). The organic layer was separated and the aqueous layer was extracted with ethyl acetate (50 mL×3). The combined organic layer was washed with brine, dried over anhydrous Na2SO4 and purified by chromatography on silica gel (3% EtOAc in petroleum ether) to afford 5-chloro-2-(1-methylcyclopropyl)-1H-pyrrolo[2,3-c]pyridine (2.2 g, 73%). 1H-NMR (CDCl3, 300 MHz) δ 9.79 (br s, 1H), 8.37 (s, 1H), 7.36 (s, 1H), 6.16 (s, 1H), 1.51 (s, 3H), 1.09 (m, 2H), 0.89 (m, 2H).

情報源と証拠