Styrene → 2-Isoxazoline-3-carboxylic acid, 5-phenyl-, ethyl ester

関与物質

反応条件

反応手順

A mixture of ethyl 2-nitroacetate (0.96 mL; 8.70 mmol), styrene (0.5 mL; 4.35 mmol) and 1,4-diazabicyclo[2.2.2]octane (DABCO) (0.050 mg, 0.438 mmol) in ethanol (2 mL) was stirred at 80° C. for 60 hrs. The reaction mixture was concentrated under reduced pressure and purified by flash chromatography on silica gel (eluent 2 to 20% ethyl acetate in heptane) to afford ethyl 5-phenyl-4,5-dihydroisoxazole-3-carboxylate 0.234 g (25%).

情報源と証拠