3-hydroxy-4-propan-2-yl-2H-furan-5-one

Conditions: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of ethyl 4-bromo-2-isopropyl-3-oxobutanoate (7.1 g, 28 mmol) and hydrogen bromide (48%, 0.032 mL, 0.28 mmol) was heated at 100° C. for 8 h. After cooling to rt, the solid was collected by filtration followed by diethyl ether washing to give 4-hydroxy-3-isopropylfuran-2(5H)-one. LC/MS: (M+1)+: 143.09. After cooling to rt the solid was collected by filtration

Conditions: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of ethyl 4-bromo-2-isopropyl-3-oxobutanoate (7.1 g, 28 mmol) and hydrogen bromide (48%, 0.032 mL, 0.28 mmol) was heated at 100° C. for 8 h. After cooling to rt, the solid was collected by filtration followed by diethyl ether washing to give 4-hydroxy-3-isopropylfuran-2(5H)-one. LCMS: (M+1)+:143.09. After cooling to rt the solid was collected by filtration