Potassium Carbonate → 5169-81-3

Participants

Reaction Steps

To a mixture of 450 mg of 2, 3-dihydro-7-methyl-2-(1-methylethyl)-4H,5H-pyrano[4,3-b]pyran-4,5-dione and 40 ml of 2-propanol, 400 mg of potassium carbonate were added and stirred at room temperature for 12 hours. The reaction mixture was then concentrated, and methyl t-butyl ether and 3% hydrochloric acid were added thereto. The separated organic layer was washed with saturated brine once, dried over anhydrous magnesium sulfate and concentrated under reduced pressure to give 340 mg of 4-hydroxy-6-methyl- 3-(4-methyl-2-pentenoyl)-2-pyrone.

Provenance & Evidence