Methanol → (Tetrahydropyran-2-yl)methoxyacetic Acid Ethyl Ester

Beteiligte Stoffe

Reaktionsschritte

To a solution of tetrahydropyran-2-methanol (1.13 mL, 10.0 mmol) in dichloromethane (20 mL) is added rhodium (II) acetate dimer (11 mg) followed by ethyl diazoacetate (1.05 mL, 10.0 mmol). The reaction mixture is stirred at rt for 20 min. To the reaction mixture is added MeOH (0.5 mL), and the solvents rotary evaporated. The residue is purified by chromatography on silica gel; elution with EtOAc:heptane (30:70) gives 1.66 g of the product 458. 1H NMR (CDCl3) δ 4.3-4.1 (m, 4 H), 4.0 (m, 1 H), 3.6-3.4 (m, 4 H), 1.85 (m, 1 H), 1.6-1.3 (m, 5 H), 1.25 (t, 3 H); MS: m/z 203 (M++1).

Herkunft & Nachweise