Aerobic copper-promoted oxidative dehydrosulfurative carbon–oxygen cross-coupling of 3,4-dihydropyrimidine-1<i>H</i>-2-thiones with alcohols
作者:Jihong Lee、Yujeong Kwon、Dong-Chan Lee、Jeong-Hun Sohn
DOI:10.1039/d1ra07713a
日期:——
A wide range of readily available DHPMs and alcohols makes the presented reaction an attractive method to access biologically valuable 2-alkoxypyrimidine derivatives with rapid diversification.
Dehydrosulfurative C–N Cross-Coupling and Concomitant Oxidative Dehydrogenation for One-Step Synthesis of 2-Aryl(alkyl)aminopyrimidines from 3,4-Dihydropyrimidin-1<i>H</i>-2-thiones
作者:Nguyen Huu Trong Phan、Hyeji Kim、Hyunik Shin、Hee-Seung Lee、Jeong-Hun Sohn
DOI:10.1021/acs.orglett.6b02617
日期:2016.10.7
A method for the synthesis of 2-aryl(alkyl)aminopyrimidinesfrom readily available 3,4-dihydropyrimidin-1H-2-thiones (DHPMs) via dehydrosulfurative C–N cross-coupling and concomitant oxidative dehydrogenation under a Pd/Cu catalytic system is described. This reaction protocol provides unprecedented diversity of fully substituted 2-aryl(alkyl)aminopyrimidines in a single step from a wide range of DHPMs
一种在Pd / Cu催化体系下通过脱硫C–N交叉偶联和伴随的氧化脱氢从容易获得的3,4-二氢嘧啶-1 H -2-硫酮(DHPM)合成2-芳基(烷基)氨基嘧啶的方法描述。该反应方案只需一步即可从多种DHPM和胺偶联伙伴中提供前所未有的完全取代的2-芳基(烷基)氨基嘧啶多样性。
A domino desulfitative coupling and decarboxylative coupling of 3,4-dihydropyrimidine-2-thiones with copper(I) carboxylates
作者:Zhang Zhang、Shi-Hong Lu、Bin Xu、Xi-Cun Wang
DOI:10.1016/j.cclet.2016.12.034
日期:2017.5
general carbon-nitrogen and carbon-carbon cross-couplingreaction between 3,4-dihydropyrimidine-2-thiones and copper(I) carboxylates were performed in the presence of palladium acetate. The copper(I) carboxylates act not only as desulfurative reagents but also as sources of carbon nucleophiles. A wide array of highly substituted and functionalized pyrimidines scaffolds were synthesized in good yields
UV-Light-Irradiated Trifluoromethylation of Diheteroaryl Disulfides with CF<sub>3</sub>
SO<sub>2</sub>
Na
作者:Bao-Qian Cao、Yi-Feng Qiu、Xi Zhang、Zheng-He Zhu、Zheng-Jun Quan、Xi-Cun Wang
DOI:10.1002/ejoc.201801565
日期:2019.2.14
A trifluoromethylation of diheteroaryldisulfides with CF3SO2Na to afford the trifluoromethyl thioethers derivatives. The conversion has good functional group compatibility, without external photocatalyst, generating the corresponding products in moderate to good yields under mild conditions, and the disulfide is fully utilized while constructing two S‐CF3 bonds.
用CF 3 SO 2 Na对二杂芳基二硫化物进行三氟甲基化,得到三氟甲基硫醚衍生物。该转化具有良好的官能团相容性,无需外部光催化剂,在温和的条件下以中等至良好的产率生成了相应的产物,并且在构建两个S-CF 3键的同时充分利用了二硫键。
Synthesis and Biological Evaluation of Novel Thio-1,4-dihydropyrimidine-5-carboxylate Derivatives
We have synthesized ten novel isopropyl 2-(4-substituted benzylthio)-6-methyl-4-phenyl-1,4-dihydropyrimidine-5-carboxylate derivatives (5a-j). All the synthesized compounds were characterized by 1H NMR, 13C NMR, IR, MS and elemental analysis data. Newly synthesized compounds were screened for antiinflammatory activity on acetic acid induced writhing in mice and carrageenan induced paw oedema in rats. Compounds (5g) and (5b) showed a potent antiinflammatory activity (100 % at 100 mg/kg b.w) compared to reference standard drug, nimesulide (100% at 50 mg/kg b.w). The other compounds showed good antiinflammatory activity. All the synthesized compounds were also screened for antioxidant activity, among those three compounds were shown good antioxidant activity by using the in vitro method.