scholarly journals An asymmetric Salamo-based Zn complex supported on Fe3O4 MNPs: a novel heterogeneous nanocatalyst for the silyl protection and deprotection of alcohols under mild conditions

RSC Advances ◽  
2021 ◽  
Vol 11 (21) ◽  
pp. 12614-12625
Author(s):  
Hongyan Yao ◽  
Yongsheng Wang ◽  
Maryam Kargar Razi
Keyword(s):  
Synthesis And Characterization ◽  
Heterogeneous Nanocatalyst ◽  
Mild Conditions ◽  
Green Conditions ◽  
Fe3o4 Mnps

The synthesis and characterization of a novel nanomagnetic Zn complex are shown. The obtained Zn complex applied in the silyl protection and deprotection of alcohols under green conditions.

scholarly journals H/D Exchange Under Mild Conditions in Arenes and Unactivated Alkanes with C6D6 and D2O Using Rigid, Electron-rich Iridium PCP Pincer Complexes

2020 ◽  
Author(s):  
Joel D. Smith ◽  
George Durrant ◽  
Daniel Ess ◽  
Warren Piers
Keyword(s):  
Hydrogen Isotope ◽  
Isotope Exchange ◽  
Room Temperature ◽  
Pincer Complexes ◽  
Synthesis And Characterization ◽  
Hydrogen Isotope Exchange ◽  
Mild Conditions ◽  
Highly Active ◽  
Pcp Pincer

<div>The synthesis and characterization of an iridium polyhydride complex (Ir-H4)</div><div>supported by an electron-rich PCP framework is described. This complex readily loses molecular</div><div>hydrogen allowing for rapid room temperature hydrogen isotope exchange (HIE) at the hydridic</div><div>positions and the α-C-H site of the ligand with deuterated solvents such as benzene-d6, toluene-d8</div><div>and THF-d8. The removal of 1-2 equivalents of molecular H2 forms unsaturated iridium carbene</div><div>trihydride (Ir-H3) or monohydride (Ir-H) compounds that are able to create further unsaturation</div><div>by reversibly transferring a hydride to the ligand carbene carbon. These species are highly active</div><div>hydrogen isotope exchange (HIE) catalysts using C6D6 or D2O as deuterium sources for the</div><div>deuteration of a variety of substrates. By modifying conditions to influence the Ir-Hn speciation,</div><div>deuteration levels can range from near exhaustive to selective only for sterically accessible sites.</div><div>Preparative level deuterations of select substrates were performed allowing for procurement of</div><div>>95% deuterated compounds in excellent isolated yields; the catalyst can be regenerated by</div><div>treatment of residues with H2 and is still active for further reactions.</div>

Synthesis and Characterization of a New Coumarin-1,2,3-Triazole Diad

2014 ◽  
Vol 618 ◽  
pp. 170-174
Author(s):  
Hong Qi Li ◽  
Xiu Juan Tian ◽  
Zhen Chen ◽  
Ding Xiao ◽  
Ning Fang ◽  
...  
Keyword(s):  
Click Chemistry ◽  
Biological Activities ◽  
Antitubercular Activity ◽  
Synthesis And Characterization ◽  
Target Compound ◽  
H Nmr ◽  
Mild Conditions ◽  
Ideal Approach ◽  
C Nmr

A new coumarin-1,2,3-triazole diad was designed and synthesized by Pechmann-Duisberg reaction and click chemistry. The three-step synthetic route to the target compound afforded an overall yield of 56%. The structures of the synthesized compounds were characterized by 1H NMR, 13C NMR, IR and mass spectrum. The click chemistry provided an ideal approach for synthesis under mild conditions of coumarin-1,2,3-triazole diads which may exhibit excellent biological activities such as antitubercular activity.

scholarly journals Palladium PEPPSI-IPr Complex Supported on a Calix[8]arene: A New Catalyst for Efficient Suzuki–Miyaura Coupling of Aryl Chlorides

Catalysts ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1081
Author(s):  
Axel Labattut ◽  
Ibrahim Abdellah ◽  
Julien Buendia ◽  
Sandra Abi Fayssal ◽  
Erika Adhel ◽  
...  
Keyword(s):  
Steric Hindrance ◽  
High Reactivity ◽  
Synthesis And Characterization ◽  
Metal Leaching ◽  
Great Promise ◽  
Aryl Chlorides ◽  
Mild Conditions ◽  
Rare Combination

We report here the synthesis and characterization of a new calix[8]arene-supported PEPPSI-IPr Pd polymetallic complex. This complex, showing greater steric hindrance around the Pd centers compared with previous calix[8]arene-based catalysts, demonstrated high reactivity and selectivity for the Suzuki–Miyaura coupling of aryl chlorides under mild conditions. Along with this good performance, the new catalyst showed low Pd leaching into the final Suzuki–Miyaura coupling products, indicative of a heterogeneous-type reactivity. This rare combination of good reactivity towards challenging substrates and low metal leaching offers great promise at both academic and industrial levels.

Synthesis and characterization of Zn2GeO4/Mg-MOF-74 composites with enhanced photocatalytic activity for CO2 reduction

2018 ◽  
Vol 8 (5) ◽  
pp. 1288-1295 ◽  
Author(s):  
Hui Zhao ◽  
Xusheng Wang ◽  
Jifei Feng ◽  
Yanning Chen ◽  
Xue Yang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Co2 Reduction ◽  
Synthesis And Characterization ◽  
Mild Conditions

Zn2GeO4/Mg-MOF-74 composites are explored for artificial CO2 phototransformation under mild conditions.

Synthesis and Characterization of Triazole-Linked Bistetrahydrobenzofuran Derivatives as Anti-Ulcer Agents

2014 ◽  
Vol 997 ◽  
pp. 128-131
Author(s):  
Quan Li Yang ◽  
Chun Xue Chen ◽  
Wu Li ◽  
Wan Liu ◽  
Hu Biao Fang ◽  
...  
Keyword(s):  
Elemental Analysis ◽  
Click Reaction ◽  
Bioactive Compound ◽  
Inhibitory Effect ◽  
Synthesis And Characterization ◽  
Mild Conditions ◽  
Inhibitory Activities ◽  
High Yields

A pair of triazole-linked bistetrahydrobenzofuran derivatives were prepared in high yields through Cu (II)-catalyzed click reaction under mild conditions. All of the intermediates and target compounds were characterized by NMR, IR, ESI-MS and elemental analysis. Thein vitroH+/K+-ATPase inhibitory effect for the target compounds were also evaluated by MTT methods, and the (E)-isomer of the bistetrahydrobenzofurans exhibited the better H+/K+-ATPase inhibitory activities than the commercial omeprazole with the IC50of 37.90 μM. The bioactive compound might be potentially used as anti-ulcer agents in the treatment of acid-related diseases.

Sign in / Sign up

Export Citation Format

Share Document