HOTf-catalyzed intermolecular hydroamination reactions of alkenes and alkynes with anilines
作者:Xuefeng Xu、Xu Zhang、Zhiqiang Wang、Manman Kong
DOI:10.1039/c5ra05209b
日期:——
Herein, the intermolecularhydroamination of alkenes and alkynes with anilines catalyzed by HOTf under mild conditions has been developed. This reaction provides one of the simplest alkene and alkyne addition methods and is an alternative to metal-catalyzed reactions. At the same time, the intramolecular hydroamination of alkynes with anilines proceeds smoothly to obtain quinolines. We found that this
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
Starting from simple anilines and ester arylpropiolates, an efficient one-pot synthesis of 2-arylindole-3-carboxylate derivatives has been developed through copper-mediated sequential hydroamination and cross-dehydrogenative coupling (CDC) reaction. The initial hydroamination of anilines to ester arylpropiolates in benzene can proceed in a stereoselective manner to give ester (Z)-3-(arylamino)acrylates
Asymmetric transfer hydrogenations of β-N-substituted enamino esters with ammonia borane
作者:Weiwei Zhao、Xiangqing Feng、Jing Yang、Haifeng Du
DOI:10.1016/j.tetlet.2019.03.060
日期:2019.4
β-enamino esters is one of the most efficientapproaches for their synthesis. Ammonia borane with low molecular weight, high hydrogen capacity, and good stability, is an ideal hydrogen source for the transfer hydrogenation. However, only a few successful examples have been reported for the asymmetric reduction with ammonia borane. In this work, an asymmetric metal-free transfer hydrogenation of β-N-substituted
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