HCID 86756592, compound → HCID 22010338, compound

Participants

Reaction Steps

A solution of ethyl (RS)-2,4-dioxo-4-[2-(1-(2-methylphenyl)ethoxy)-4-(3-thienylmethoxy)phenyl]butanoate (0.38 g) in 15% methanolic potassium hydroxide (25 mL) is stirred at reflux for 1 hour before being cooled and concentrated under reduced pressure. The residue is dissolved in water, acidified to pH 1 with concentrated hydrochloric acid and extracted with ethyl acetate. The organic layer is dried over magnesium sulphate, filtered and concentrated under reduced pressure. The residue is recrystallised from cyclohexane to give (RS)-2,4-dioxo-4-[2-(1-(2-methylphenyl)ethoxy)-4-(3-thienylmethoxy)-phenyl]butanoic acid (35 mg) as a yellow solid, m.p. 124-6° C. [Elemental analysis:- C, 65.82; H, 5.03%; Calculated for C24H22O6S:- C, 65.74; H, 5.06%].

Provenance & Evidence