N-phenylmaleimide was synthesized with the closing-ring dehydration catalyst of nickel diacetylacetonate(Ni(acac)2) by acetic anhydride method.

• 以乙酰丙酮镍为闭环脱水催化剂,运用改进的醋酐法,合成了N-苯基马来酰亚胺。