Nano copper oxide mediated ligand-free C–S cross-coupling and concomitant oxidative aromatization of 4-aryl-3,4-dihydropyrimidin-2(1H)-thione with diaryliodonium salts
摘要:
A wide range of Biginelli 4-aryl-3,4-dihydropyrimidin-2(1H)-thiones undergo ligand-free C-S cross-coupling with diaryliodonium triflates in the presence of CuO nanoparticles with the concomitant oxidative aromatization to form highly substituted 2-(thioaryl)pyrimidine. The nano CuO catalyst can be recycled and reused three times without any significant loss of catalytic activity. (C) 2012 Elsevier Ltd. All rights reserved.
Chemo-Controlled Cross-Coupling of Di(hetero)aryl Disulfides with Grignard Reagents: CC<i>vs.</i>CS Bond Formation
作者:Bao-Xin Du、Zheng-Jun Quan、Yu-Xia Da、Zhang Zhang、Xi-Cun Wang
DOI:10.1002/adsc.201400980
日期:2015.4.13
A general protocol for the chemoselectivity‐controlled CC and CS coupling reactions of di(hetero)aryldisulfides with Grignardreagents catalyzed by ferrocene and palladium acetate has been developed. Ferrocene favored the formation of CS coupled products at low temperature, whereas CCbond couplings were favored when palladium acetate was used. All the reactions proceeded with excellent chemoselectivity
Synthesis of C2‐Functionalized Pyrimidine Derivatives by Using Arynes and Dithiopyrimidines
作者:Chun‐Hong Yang、Wen‐Peng Wang、Ming Li、Fan Gao、Wen Ma、Dong‐Ping Chen、Xi‐Cun Wang、Zheng‐Jun Quan
DOI:10.1002/ejoc.202300435
日期:2023.8
A method for synthesizing C2 functionalized pyrimidine derivatives by phenylalkyne and pyrimidine disulfide under environmental conditions with good group compatibility is reported. Furthermore, density functional theory (DFT) calculations confirm that it is more advantageous to generate C2-functionalized pyrimidine derivatives.