Succinic anhydride → N-n-hexyl 5-(3-carboxy-propionyloxy)-2-hydroxybenzamide

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Reaction Steps

N-n-Hexyl 2,5-dihydroxybenzamide (1 g) is dissolved in 15 mL of methylene chloride. To the solution 0.75 g of succinic anhydride and 0.95 g of 4-N,N-dimethylaminopyridene is added. The reaction mixture is allowed to stir at ambient conditions over 24 hours. Solvent is removed and the residue is reconstituted in ethyl acetate and extracted twice with 1 N HCl to remove the catalyst. The organic layer is further extracted with saturated sodium chloride solution and dried over anhydrous sodium sulfate. Solvent is removed under reduced pressure to yield the product as an off-white powder.

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