ABSTRACT Copper-catalyzed reaction of N-propargyl isoindoline-1,3-dione and 4-azidomethyl coumarins / 4-azidomethyl-1-aza coumarins under click chemistry conditions afforded 1,4-disubstituted 1,2,3-triazoles, whereas ruthenium catalysis yielded isomeric 1,5-disubstituted 1,2,3-triazoles. The two regioisomers have been distinguished by NOE studies. UV absorption for a given pair of isomers exhibited
摘要 在点击
化学条件下,N-炔丙基
异吲哚啉-1,3-二酮和 4-
叠氮甲基
香豆素/4-
叠氮甲基-1-氮杂
香豆素在
铜催化下反应得到 1,4-二取代
1,2,3-三唑,而
钌催化产生异构的 1,5-二取代的
1,2,3-三唑。两种区域异构体已通过 NOE 研究区分开来。一对给定异构体的紫外吸收显示出相似的趋势,而荧光测量显示出相当大的差异。还对
叠氮化物与
铜和
钌的相互作用进行了光物理研究。图形概要