Hydrochloric Acid → 1-Nonanoylpyrrolidine-2,5-dione

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Reaction Steps

20 g succinimide were suspended in 100 ml pyridine, 0.5 g N,N-dimethylaminopyridine added, and 39.2 g nonanoic acid chloride added dropwise at ice-bath temperature. Subsequently the mixture was stirred for 1 h at room temperature and 500 ml of 2N HCl solution were added with cooling. The aqueous phase was extracted with ethyl acetate and the organic phase washed with 2N HCl solution and dried (Na2SO4). After removing the solvent, the residue was twice recrystallized from n-hexane. 31.6 g (65%) N-nonanoylsuccinimide were obtained as a colourless solid. Melting point: 59 to 60° C. (n-hexane). The 1H-NMR spectroscopic data are in agreement with the structure.

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