N-hydroxysuccinimide (10 g, 0.086 mol) and triethylamine (13.2 g, 0.129 mol) were dissolved in chloroform (130 mL) at 0 °C. Stirring was maintained and acryloyl chloride (8.6 g, 0.094 mol) was slowly added dropwise to the reaction mixture, the dropwise process was controlled to be completed within 2 hours. After the reaction was completed, stirring was continued at 0 °C for 30 min. Subsequently, the reaction solution was washed twice with 60 mL of saturated aqueous NaCl, and the organic phase was dried with MgSO4, filtered and concentrated to a residual volume of about 30 mL. to the concentrate was added a solvent mixture of ethyl acetate/pentane (14 mL, 1:3, v/v/v), and the mixture was kept at 0 °C to promote the crystallization of N-acryloyloxysuccinimide overnight, resulting in the target 70% yield of the Product. The structure of the product was confirmed by 1H NMR (CDCl3) with chemical shifts of 2.95 (s, 4H, CH2CH2), 6.20 (m, 1H, CH=CH2), 6.4 (m, 1H, CH=CH2) and 6.75 (m, 1H, CH=CH2), respectively.
