Hydrochloric Acid → Maltol

Participants

Reaction Conditions

Reaction Steps

To a sample of 2-(1-hydroxyethyl)-3-bromo-furan (0.54 g, 2.8 mmoles) in 15 ml water and 15 ml methanol at 0° C. was added 0.24 g (3.0 mmoles) of bromine. After allowing the reaction to come to room temperature, the reaction was treated with 3 ml of conc. HCl and heated to 96° C. for 2 hours, removing much of the methanol. After cooling, maltol was isolated by the method of Example 1.

Provenance & Evidence