Ag/CNT-catalyzed hydroamination of activated alkynes with aromatic amines
作者:Yi Liu、Guojie Wu、Yingde Cui
DOI:10.1002/aoc.2950
日期:2013.4
nanotubes (CNTs) provide a certain potential activation of catalysis in heterogeneous catalytic organicreactions. Herein, an efficient Ag/CNT‐catalyzed synthesis of enamines via hydroamination of activatedalkynes with aromatic amines has been described. This catalyst still retains catalytic activity after being recycled and reused three times. In addition, it represents a green and environmentally
Synthesis of Quinoxaline Derivatives via Tandem Oxidative Azidation/Cyclization Reaction of <i>N</i>-Arylenamines
作者:Haichao Ma、Dianjun Li、Wei Yu
DOI:10.1021/acs.orglett.6b00148
日期:2016.2.19
A new method was developed for the synthesis of quinoxalines. This method employs N-arylenamines and TMSN3 as the starting materials and implements two oxidative C–N bond-forming processes in a tandem pattern by using (diacetoxyiodo)benzene as the common oxidant. The present reaction conditions are mild and simple and thus are useful in practical synthesis.
Development, Scope and Mechanisms of Multicomponent Reactions of Asymmetric Electron-Deficient Alkynes with Amines and Formaldehyde
作者:Hua Cao、Xiujun Wang、Huanfeng Jiang、Qiuhua Zhu、Min Zhang、Haiyang Liu
DOI:10.1002/chem.200801471
日期:——
pyrimidine derivatives are presented herein: 1) A catalyst-free multicomponent reaction of electron-deficient alkynes, aliphatic amines and formaldehyde and 2) Ag(I)-catalyzedsynthesis of pyrimidines from electron-deficient alkynes, anilines and formaldehyde by a dominoreaction. Under optimized conditions, the multicomponent reactions were accomplished with high regioselectivity and excellent yields. A computational
Oxidative free radical reactions of enamino esters
作者:Che-Ping Chuang、Yi-Lung Wu
DOI:10.1016/j.tet.2003.12.035
日期:2004.2
produced by the cerium(IV) ammoniumnitrate (CAN) oxidation of β-dicarbonyl compounds undergo efficient addition to the C–C double bond of enamino esters. This CAN mediated free radical reaction between enamino esters and β-dicarbonyl compounds provides a novel method for the synthesis of highly substituted pyrroles. The direct CAN oxidation of β-enaminocinnamates gave the dimerization products effectively
Synthesis of highly substituted pyrroles via oxidative free radical reactions of β-aminocinnamates
作者:An-I Tsai、Che-Ping Chuang
DOI:10.1016/j.tet.2005.12.011
日期:2006.3
reactions of β-aminocinnamates are described. Imine radicals produced by tetra-n-butylammonium cerium(IV) nitrate (TBACN) oxidation of enamines undergo efficient addition to the C–C double bond of β-aminocinnamates. This TBACN mediated free radical reaction between β-aminocinnamates and enamines provides a novel method for the synthesis of highly substitutedpyrroles. The direct TBACN oxidation of β-aminocinnamates