取代基对希夫碱钼配合物催化烯烃环氧化反应的影响  

Substituent Effect on the Epoxidation of Olefins Catalyzed by Schiff Base Molybdenum Complexes

作　　者：张文馨 禚子涵 谢静静 魏航 李同 刘海雯 王伟立 ZHANG Wenxin;ZHUO Zihan;XIE Jingjing;WEI Hang;LI Tong;LIU Haiwen;WANG Weili(School of Chemistry and Material Science,Ludong University,Yantai 264039,China)

机构地区：[1]鲁东大学化学与材料科学学院,山东烟台264039

出　　处：《鲁东大学学报（自然科学版）》2021年第3期260-266,共7页Journal of Ludong University:Natural Science Edition

基　　金：山东省自然科学基金(ZR2017PB006);鲁东大学引进人才启动基金(LB2017003);山东省大学生创新课题项目(S201910451123,S201910451158)。

摘　　要：变换苯甲醛环5位置上的氯取代基和苯胺环5’位置上的硝基制备了4种希夫碱钼配合物催化剂,在不使用有机溶剂的条件下催化环辛烯水相环氧化反应,考察了它们的催化活性,发现:引入吸电基可提高希夫碱钼配合物的催化性能,在优化的催化剂(0.1%)上环辛烯转化率达到了94%,环氧化物选择性均大于88%。反应体系简单、经济、清洁。The 5-position of Cl on benzaldehyde ring and 5’-position of NO_(2)on aniline ring were brought to the backbone of the ligands to prepare four different Schiff base molybdenum complexes,and their catalytic performances in the catalytic epoxidation of cyclooctene under solvent-free condition were investigated.It is found that the introduction of electron withdrawing group has an obvious effluence on the catalytic process,and the conversion of cyclooctene reaches up to 94%over the optimal catalyst(0.1%)with high epoxide selectivity(>88%).Furthermore,the catalytic system is simple,economic and clean.

关 键 词：环氧化物 希夫碱 钼配合物 烯烃环氧化 催化 取代基 

分 类 号：O626.4[理学—有机化学]