ethyl 4-[5,5-dimethyl-2,4-dioxo-3-(3-bromopropyl)imidazolidin-1-yl]butanoate 、
6-(3-bromopropyloxy)-7-propyl-3-trifluoromethyl-benzisoxazole 在
caesium carbonate 作用下,
以
DMF (N,N-dimethyl-formamide) 为溶剂,
生成 ethyl 4-[5,5-dimethyl-2,4-dioxo-3-(3-{[7-propyl-3-(trifluoromethyl)-1,2-benzisoxazol-6-yl]oxy}propyl)imidazolidin-1-yl]butanoate