Hydrochloric Acid → 6-Ethyl-4-hydroxy-3-propanoyl-2H-pyran-2-one

関与物質

反応条件

反応手順

3-Oxopentanoic acid (II in Scheme 1; Example 1.1; 2 g; 17.2 mmol) was dissolved in 30 ml THF and cooled to 0° C. To the solution, was added dicarbodiimidazole (3.6 g; 22.2 mmol; Aldrich). The reaction mixture was stirred for 18 h at 25° C., neutralized with 2% HCl, extracted with 3×30 ml EtOAc, dried with anhydrous Na2SO4, and evaporated to a white solid. The product was purified via silica chromatography (20% EtOAc in hexanes).

情報源と証拠