Effect of Building Block Transformation in Covalent Triazine‐Based Frameworks for Enhanced CO 2 Uptake and Metal‐Free Heterogeneous Catalysis

2019 ◽  
Vol 26 (7) ◽  
pp. 1548-1557 ◽  
Author(s):  
Himanshu Sekhar Jena ◽  
Chidharth Krishnaraj ◽  
Johannes Schmidt ◽  
Karen Leus ◽  
Kristof Van Hecke ◽  
...  
Keyword(s):  
Heterogeneous Catalysis ◽  
Building Block ◽  
Metal Free

Effect of Building Block Transformation in Covalent Triazine‐Based Frameworks for Enhanced CO 2 Uptake and Metal‐Free Heterogeneous Catalysis

2019 ◽  
Vol 26 (7) ◽  
pp. 1441-1441
Author(s):  
Himanshu Sekhar Jena ◽  
Chidharth Krishnaraj ◽  
Johannes Schmidt ◽  
Karen Leus ◽  
Kristof Van Hecke ◽  
...  
Keyword(s):  
Heterogeneous Catalysis ◽  
Building Block ◽  
Metal Free

Front Cover: Effect of Building Block Transformation in Covalent Triazine‐Based Frameworks for Enhanced CO 2 Uptake and Metal‐Free Heterogeneous Catalysis (Chem. Eur. J. 7/2020)

2019 ◽  
Vol 26 (7) ◽  
pp. 1437-1437
Author(s):  
Himanshu Sekhar Jena ◽  
Chidharth Krishnaraj ◽  
Johannes Schmidt ◽  
Karen Leus ◽  
Kristof Van Hecke ◽  
...  
Keyword(s):  
Heterogeneous Catalysis ◽  
Building Block ◽  
Front Cover ◽  
Metal Free

In situ construction of phenanthroline-based cationic radical porous hybrid polymers for metal-free heterogeneous catalysis

2021 ◽  
Vol 9 (12) ◽  
pp. 7556-7565
Author(s):  
Guojian Chen ◽  
Yadong Zhang ◽  
Ke Liu ◽  
Xiaoqing Liu ◽  
Lei Wu ◽  
...  
Keyword(s):  
Heterogeneous Catalysis ◽  
Heterogeneous Catalysts ◽  
Hybrid Polymers ◽  
Metal Free ◽  
Oxidation Of Sulfides

Constructing phenanthroline-based cationic radical porous hybrid polymers as versatile metal-free heterogeneous catalysts for both oxidation of sulfides and CO2 conversion.

β-Diketone boron difluoride dye-functionalized conjugated microporous polymers for efficient aerobic oxidative photocatalysis

2021 ◽  
Author(s):  
Weitao Gong ◽  
Kaixun Dong ◽  
Lu Liu ◽  
Mehdi Hassan ◽  
Guiling Ning
Keyword(s):  
Building Block ◽  
Metal Free ◽  
Microporous Polymers ◽  
Boron Difluoride ◽  
Conjugated Microporous Polymers

Two new conjugated microporous polymers, TPB-B-CMP and TPA-B-CMP, with β-diketone-boron difluoride dye as the key building block were designed and successfully prepared. They were further employed as efficient metal-free heterogeneous photocatalysts.

A practical metal-free homolytic aromatic alkylation protocol for the synthesis of 3-(pyrazin-2-yl)bicyclo[1.1.1]pentane-1-carboxylic acid

2016 ◽  
Vol 14 (40) ◽  
pp. 9485-9489 ◽  
Author(s):  
Navanita T. Thirumoorthi ◽  
Vikrant A. Adsool
Keyword(s):  
Carboxylic Acid ◽  
Building Block ◽  
Medicinal Chemistry ◽  
Biological Study ◽  
Metal Free

As a part of our ongoing synthetic quest to expand the frontiers of contemporary medicinal chemistry, we now report an expedient synthesis of a potentially useful bicyclo[1.1.1]pentane building block, 3-(pyrazin-2-yl)bicyclo[1.1.1]pentane-1-carboxylic acid. This report also showcases the application of this motif as a “spacer” probe in a biological study.

Ionic Liquid-Catalyzed C–S Bond Construction using CO2 as a C1 Building Block under Mild Conditions: A Metal-Free Route to Synthesis of Benzothiazoles

ACS Catalysis ◽  
2015 ◽  
Vol 5 (11) ◽  
pp. 6648-6652 ◽  
Author(s):  
Xiang Gao ◽  
Bo Yu ◽  
Zhenzhen Yang ◽  
Yanfei Zhao ◽  
Hongye Zhang ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Building Block ◽  
Metal Free ◽  
Mild Conditions

scholarly journals Application of the Meerwein reaction of 1,4-benzoquinone to a metal-free synthesis of benzofuropyridine analogues

2021 ◽  
Vol 17 ◽  
pp. 977-982
Author(s):  
Rashmi Singh ◽  
Tomas Horsten ◽  
Rashmi Prakash ◽  
Swapan Dey ◽  
Wim Dehaen
Keyword(s):  
Building Block ◽  
Electrophilic Substitution ◽  
Diazonium Salt ◽  
Metal Free ◽  
Meerwein Reaction

Several new heterocyclic systems based on a hydroxybenzofuro[2,3-b]pyridine building block were prepared. This benzofuropyridine is easily available from the Meerwein reaction of benzoquinone and a heterocyclic diazonium salt, followed by reduction and cyclization. Electrophilic substitution and further condensations give polycyclic systems, including oxazolo- and chromeno-fused analogues.

Transition-Metal-Free Radical Homocoupling Polymerization to Conjugated Poly(Phenylene butadiynylene) Polymers

2021 ◽  
Author(s):  
Qingmin Liu ◽  
Xuepeng Wang ◽  
Bien Tan ◽  
Shangbin Jin
Keyword(s):  
Free Radical ◽  
Heterogeneous Catalysis ◽  
Transition Metal ◽  
Gas Adsorption ◽  
Porous Polymers ◽  
Metal Free ◽  
Microporous Polymers ◽  
Conjugated Microporous Polymers

Conjugated microporous polymers (CMPs) are attractive porous polymers which have found enormous science and technical in-terests in gas adsorption and heterogeneous catalysis. However, most of these conjugated porous polymers are...

scholarly journals Ternary aromatic and anti-aromatic clusters derived from the hypho species [Sn2Sb5]3−

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Yu-He Xu ◽  
Nikolay V. Tkachenko ◽  
Ivan A. Popov ◽  
Lei Qiao ◽  
Alvaro Muñoz-Castro ◽  
...  
Keyword(s):  
Coordination Chemistry ◽  
Heterogeneous Catalysis ◽  
Building Block ◽  
Transition Metal Ions ◽  
Heterometallic Clusters ◽  
Metal Bonding ◽  
Metal Metal ◽  
Potential Applications ◽  
Additional Stabilization ◽  
Aromatic Clusters

AbstractHeterometallic clusters have attracted broad interests in the synthetic chemistry due to their various coordination modes and potential applications in heterogeneous catalysis. Here we report the synthesis, experimental, and theoretical characterizations of four ternary clusters ([M2(CO)6Sn2Sb5]3− (M = Cr, Mo), and [(MSn2Sb5)2]4−, (M = Cu, Ag)) in the process of capturing the hypho- [Sn2Sb5]3− in ethylenediamine (en) solution. We show that the coordination of the binary anion to transition-metal ions or fragments provides additional stabilization due to the formation of locally σ-aromatic units, producing a spherical aromatic shielding region in the cages. While in the case of [Mo2(CO)6Sn2Sb5]3− stabilization arises from locally σ-aromatic three-centre and five-centre two-electron bonds, aromatic islands in [(AgSn2Sb5)2]4− and [(CuSn2Sb5)2]4− render them globally antiaromatic. This work describes the coordination chemistry of the versatile building block [Sn2Sb5]3−, thus providing conceptual advances in the field of metal-metal bonding in clusters.

Chemoselective acylation of N-acylglutarimides with N-acylpyrroles and aryl esters under transition-metal-free conditions

2021 ◽  
Author(s):  
jie li ◽  
Jaiqi Yao ◽  
Dong Zou ◽  
Lingfeng Chen ◽  
Patrick Walsh ◽  
...  
Keyword(s):  
Transition Metal ◽  
Bioactive Compounds ◽  
Building Block ◽  
Structural Motif ◽  
Metal Free ◽  
Chemoselective Acylation

The imide moiety is a well-known structural motif in bioactive compounds and a useful building block in a variety of processes. Using N-acylglutarimides with MN(SiMe3)2 and either N-acylpyrroles or aryl...

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