Acetone → 5-(benzyloxy)-4-oxo-4H-pyran-2-carboxylic acid

Participants

Reaction Steps

To a solution of 5-(benzyloxy)-2-(hydroxymethyl)-4H-pyran-4-one (93.4 g, 401 mmol) in 2.6 L of acetone was added 400 mL of Jone's reagent (2.45 M) at 0° C. The reaction was warmed to room temperature, and the mixture was stirred overnight. The solid was removed by filtration, and the filtrate was concentrated. The concentrated residue was poured into water. The resulting white solid was collected and washed with water and dried to obtain 5-(benzyloxy)-4-oxo-4H-pyran-2-carboxylic acid. 1H NMR δ (400 MHz, d6-DMSO): 8.34 (s, 1H), 7.42-7.33 (m, 5H), 6.91(s, 1H), 4.95 (s, 2H).

Provenance & Evidence