Silver Triflate-Catalyzed or Electrophile-Mediated Tandem Reaction of<i>N′</i>-(2-Alkynylbenzylidene)hydrazides with Dimethyl Acetylenedicarboxylate
作者:Zhiyuan Chen、Qiuping Ding、Xingxin Yu、Jie Wu
DOI:10.1002/adsc.200900131
日期:2009.7
Different outcomes were generated under different conditions for the tandem reactions of N′‐(2‐alkynylbenzylidene)hydrazides with dimethyl acetylenedicarboxylate (DMAD) catalyzed by silver triflate or in the presence of electrophiles. The unexpected isoquinoline‐based azomethine ylides were obtained when the reaction was catalyzed by silver triflate or in the presence of bromine, while the fused 1
Silver(I)- and Base-Mediated [3 + 3]-Cycloaddition of <i>C</i>,<i>N</i>-Cyclic Azomethine Imines with Aza-oxyallyl Cations
作者:Xiao Cheng、Xia Cao、Jun Xuan、Wen-Jing Xiao
DOI:10.1021/acs.orglett.7b03344
日期:2018.1.5
A silver(I) and base-mediated [3 + 3]-cycloaddition reaction of in situ generated C,N-cyclic azomethine imines with in situ formed aza-oxyallyl cations is reported. This one-pot cycloaddition process shows broad substrate scope an excellent functional group tolerance and provides the corresponding biologically important isoquinoline-fused triazines in good to excellent yields.
Multicatalytic tandem reaction of N′-(2-alkynylbenzylidene)hydrazide with indole
作者:Xingxin Yu、Xiaodi Yang、Jie Wu
DOI:10.1039/b913409c
日期:——
The combination of AgOTf and Dy(OTf)3 shows high efficiency as a catalyst in the tandemreactions of N′-(2-alkynylbenzylidene)hydrazides with indoles, which generate the unexpected 1-(indol-3-yl)-2-aminoisoquinolinium triflates in good yields.
[Cu3(1)(2)]3+ and guest G were treated with palladium(II) ions, the biped 2 was released from [Cu3(1)(2)]3+ generating the nanocage [Pd2(2)4(G)]4+ with guest G being encapsulated (NetState-II). This transformation that was reversed by the addition of DMAP enabled modulation of both the overall fluorescence and the activity of copper(I) catalyzing an aza Hopf cyclization.
A [3 + 2] cycloaddition of C,N-cyclicazomethineimine with in situ-generated CF3CN for the construction of 2-(trifluoromethyl)-[1,2,4]triazolo[5,1-a]isoquinoline is reported. Remarkably, this process shows a broad substrate scope with excellent functional group tolerance, which is scalable and enables a practical route to a library of 2-(trifluoromethyl)-[1,2,4]triazolo[5,1-a]isoquinoline derivatives
C , N-环状偶氮甲碱亚胺与原位生成的 CF 3 CN 进行 [3 + 2] 环加成,用于构建 2-(三氟甲基)-[1,2,4]三唑并[5,1- a ]异喹啉:报道称。值得注意的是,该过程显示出广泛的底物范围和出色的官能团耐受性,可扩展并为构建 2-(三氟甲基)-[1,2,4]三唑并[5,1- a ]异喹啉衍生物库提供了一条实用途径中等至良好的产量。