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
AgOTf-catalyzed tandem reaction of N′-(2-alkynylbenzylidene)hydrazide with alkyne
作者:Zhiyuan Chen、Xiaodi Yang、Jie Wu
DOI:10.1039/b904498a
日期:——
AgOTf-catalyzedtandemreactions of N'-(2-alkynylbenzylidene)hydrazides with various alkynes under mild conditions are described, which generate fused 1,2-dihydroisoquinolines in good to excellent yields.
Synthesis of H-pyrazolo[5,1-a]isoquinolines via a silver triflate-catalyzed tandem reaction of N′-(2-alkynylbenzylidene)hydrazide with alcohol
作者:Wenyan Hao、Tinli Zhang、Mingzhong Cai
DOI:10.1016/j.tet.2013.08.049
日期:2013.11
A silver triflate-catalyzed tandemreaction of N′-(2-alkynylbenzylidene)hydrazide with alcohol is reported, which generates H-pyrazolo[5,1-a]isoquinoline derivatives in good yields under mild conditions.
Silver triflate and N-heterocyclic carbene co-catalyzed reaction of N′-(2-alkynylbenzylidene)hydrazide, methanol with α,β-unsaturated aldehyde
作者:Zhiyuan Chen、Xingxin Yu、Jie Wu
DOI:10.1039/c0cc01207f
日期:——
A highly efficient silver triflate and N-heterocyclic carbene co-catalyzed three-component reaction of Nâ²-(2-alkynylbenzylidene)hydrazide, methanol with α,β-unsaturated aldehyde is described, which gives rise to the 2-amino-1,2-dihydroisoquinolines in good yield.
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.