摘要
以取代苄氯(1a^1c)为起始原料,与咪唑经氮烷基化反应制得苄基咪唑氯盐(2a^2c);2a^2c与氧化银经原位去质子化反应合成了3种新型的氮杂环卡宾银配合物——(NHC)AgCl[NHC:1,3-二(4-甲氧基苄基)咪唑-2-亚基(3a),1,3-二(3-甲氧基苄基)咪唑-2-亚基(3b)]和[(NHC)AgCl]_2[NHC=1,3-二(4-氯苄基)咪唑-2-亚基(3c)],其结构经~1H NMR,^(13)C NMR,IR,元素分析和X-射线单晶衍射表征。3a^3c单晶结构均属单斜晶系,3a为P21/n空间群,3b和3c为P21/c空间群,3a和3b为单核银配合物,3c为双核银配合物。
Benzyl imidazolium chlorides(2a-2c) were prepared by N-alkylation reaction of substituted benzyl chloride with imidazole.Three novel silver N-heterocyclic carbene complexes,(NHC) AgCl[NHC:1,3-bis(4-methoxybenzyl) imidazol-2-ylidene(3a),1,3-bis(3-methoxybenzyl) imidazol-2-ylidene(3b)] and [(NHC)AgCl]2[NHC=1,3-bis(4-chlorobenzyl) imidazol-2-ylidene(3c) ],were synthesized by the in situ deprotonation reaction of 2a-2c with Ag_2O.The structures were characterized by ^1H NMR,^13C NMR,IR,elemental analysis and X-ray single crystal diffraction analysis.3a-3c belong to monoclinic crystal system,space groups are P21/n for 3a,P21/c for 3b and 3c.3a and3 b are mononuclear Ag(I) complexes,where as 3c is a di-nuclear Ag(I) complex.
作者
李山山
孙京
吴爽
王欣
周明东
LI Shan-shan SUN Jing WU Shuang WANG Xin ZHOU Ming-dong(College of Chemistry, Chemical Engineering and Enviromental Engineering, Liaoning Shihua University, Fushun 113001, China)
出处
《合成化学》
CAS
CSCD
2017年第1期26-31,共6页
Chinese Journal of Synthetic Chemistry
基金
国家自然科学基金资助项目(21201095)
关键词
苄基咪唑氯盐
氮杂环卡宾
银配合物
合成
晶体结构
benzyl imidazolium chloride
N-heterocyclic carbene
silver complex
synthesis
crystal structure