从邻苯二胺出发,合成了2-氰甲基苯并咪唑,在优选出的催化剂吗啡啉/乙酸催化下,合成了新型的双苯并咪唑丙烯腈衍生物和3-吲哚-2-苯并咪唑丙烯腈衍生物;将2-氰甲基苯并咪唑经过碱性水解、酯化,得到苯并咪唑乙酸乙酯,后者经过Knoevenagel缩合/分子内酯交换接续反应高产率地得到了新型的苯并咪唑取代的香豆素衍生物。 Starting from o-phenylenediamine, 2-cyanomethylbenzimidazole was synthesized. Under the catalysis of morpholine / acetic acid, a novel bisbenzimidazole acrylonitrile derivative and 3-indol-2- Benzimidazole acrylonitrile derivative; 2-cyanomethylbenzimidazole is subjected to basic hydrolysis and esterification to obtain benzimidazole ethyl acetate which is obtained in high yield by Knoevenagel condensation / lacton exchange continuation reaction Novel benzimidazole substituted coumarin derivatives.