Epoxy-Functionalized Porous Organic Polymers via the Diels-Alder Cycloaddition Reaction for Atmospheric Water Capture

2018 ◽  
Vol 57 (12) ◽  
pp. 3173-3177 ◽  
Author(s):  
Yearin Byun ◽  
Ali Coskun
Keyword(s):  
Cycloaddition Reaction ◽  
Diels Alder ◽  
Organic Polymers ◽  
Atmospheric Water ◽  
Porous Organic Polymers

The “bottom-up” construction of chiral porous organic polymers for heterogeneous asymmetric organocatalysis: MacMillan catalyst built-in nanoporous organic frameworks

2017 ◽  
Vol 8 (36) ◽  
pp. 5561-5569 ◽  
Author(s):  
Chang-An Wang ◽  
Yan-Wei Li ◽  
Yin-Feng Han ◽  
Jian-Ping Zhang ◽  
Ren-Tao Wu ◽  
...  
Keyword(s):  
Alder Reaction ◽  
Diels Alder ◽  
Organic Polymers ◽  
Porous Organic Polymers ◽  
Bottom Up ◽  
Diels Alder Reaction ◽  
Asymmetric Organocatalysis

MacMillan catalyst-embedded chiral porous organic polymers were synthesized via bottom-up strategy and used as efficient and recyclable heterogeneous organocatalysts for the asymmetric Diels–Alder reaction.

Recent advances in CO2 capture and simultaneous conversion into cyclic carbonates over porous organic polymers having accessible metal sites

2020 ◽  
Vol 8 (36) ◽  
pp. 18408-18424 ◽  
Author(s):  
Rongchang Luo ◽  
Min Chen ◽  
Xiangying Liu ◽  
Wei Xu ◽  
Jiayi Li ◽  
...  
Keyword(s):  
Active Sites ◽  
Cycloaddition Reaction ◽  
Cyclic Carbonates ◽  
Organic Polymers ◽  
Structure Property ◽  
Porous Organic Polymers ◽  
Design And Synthesis ◽  
Recent Advances ◽  
Structure Property Relationship ◽  
Metal Catalyzed

This review describes the recent advances in the design and synthesis of metal-functionalized porous organic polymers featuring accessible active sites and discloses the structure–property relationship in the metal-catalyzed CO2 cycloaddition reaction to epoxides.

Polar Diels-Alder Reactions Under Microwave Irradiation Employing Different Heterocyclic Compounds as Electrophiles

2019 ◽  
Vol 16 (6) ◽  
pp. 527-543 ◽  
Author(s):  
Pedro M.E. Mancini ◽  
Carla M. Ormachea ◽  
María N. Kneeteman
Keyword(s):  
Organic Synthesis ◽  
Heterocyclic Compounds ◽  
Ionic Conduction ◽  
Theoretical Calculations ◽  
Cycloaddition Reaction ◽  
Diels Alder ◽  
The Other ◽  
Conventional Heating ◽  
Protic Ionic Liquids ◽  
Solvent Free Conditions

During the last twenty years, our research group has been working with aromatic nitrosubstituted compounds acting as electrophiles in Polar Diels-Alder (P-DA) reactions with different dienes of diverse nucleophilicity. In this type of reaction, after the cycloaddition reaction, the nitrated compounds obtained as the [4+2] cycloadducts suffer cis-extrusion with the loss of nitrous acid and a subsequent aromatization. In this form, the reaction results are irreversible. On the other hand, the microwave-assisted controlled heating become a powerful tool in organic synthesis as it makes the reaction mixture undergo heating by a combination of thermal effects, dipolar polarization and ionic conduction. As the Diels-Alder (D-A) reaction is one of the most important process in organic synthesis, the microwave (MW) irradiation was applied instead of conventional heating, and this resulted in better yields and shorter reaction times. Several substituted heterocyclic compounds were used as electrophiles and different dienes as nucleophiles. Two experimental situations are involved: one in the presence of Protic Ionic Liquids (PILs) as solvent and the other under solvent-free conditions. The analysis is based on experimental data and theoretical calculations.

Phosphorus Containing Porous Organic Polymers: Synthetic Techniques and Applications in Organic Synthesis and Catalysis

2021 ◽  
Author(s):  
Pramod Kumar ◽  
Animesh Das ◽  
Biplab Maji
Keyword(s):  
Organic Synthesis ◽  
Homogeneous Catalysis ◽  
Heterogeneous Catalysts ◽  
Organic Polymer ◽  
Organic Polymers ◽  
Porous Organic Polymers ◽  
Porous Organic Polymer ◽  
Phosphorus Containing

The phosphorous-containing porous organic polymer is a trending material for the synthesis of heterogeneous catalysts. Decades of investigations have established phosphines as versatile ligands in homogeneous catalysis. Recently, phosphine-based heterogeneous...

scholarly journals Rational design of bifunctional conjugated microporous polymers

2021 ◽  
Author(s):  
Yanpei Song ◽  
Pui Ching Lan ◽  
Kyle Martin ◽  
Shengqian Ma
Keyword(s):  
Rational Design ◽  
Organic Polymers ◽  
Porous Organic Polymers ◽  
First Report ◽  
Microporous Polymers ◽  
Conjugated Microporous Polymers

Conjugated microporous polymers (CMPs) are an emerging class of porous organic polymers that combine -conjugated skeletons with permanent micropores. Since their first report in 2007, the enormous exploration of linkage...

Synthese neuer Pyridin-C-nukleoside der 2 ,3 -Didesoxyribose durch „inverse“ [4+2]-Cycloaddition Synthesis of Novel Pyridine-C-nucleosides of 2,3-Dideoxyribose by „Inverse“ [4+2]-Cycloaddition

1997 ◽  
Vol 52 (7) ◽  
pp. 851-858 ◽  
Author(s):  
Gunther Seitz ◽  
Johanna Siegl
Keyword(s):  
Cycloaddition Reaction ◽  
Alder Reaction ◽  
Diels Alder ◽  
The Novel ◽  
Protecting Group ◽  
Enol Ethers ◽  
Inverse Electron Demand ◽  
Diels Alder Reaction ◽  
Cyclic Ketene Acetals

The anomeric imido esters 5 and 6, appropriate precursors for C-nucleoside synthesis, were prepared and utilized as heterodienophiles in a Diels-Alder reaction with inverse electron demand to yield the novel, protected 1.2.4-triazine C-nucleosides 8 and 9. They could be deprotected by treatment with 70% trifluoroacetic acid to furnish the free C-nucleosides 10 and 11. The triazine „aglycon“ of 8 contains an electron deficient diazadiene system, highly activated to react with various electron rich dienophiles such as enamines, enol ethers and several cyclic ketene acetals in an „inverse“ [4+2]-cycloaddition reaction. The Diels-Alder adducts spontaneously eliminate N2 and after follow-up reactions the O-TBDPS protected pyridine-C-nucleosides 13, 15, 17,19, 21 and 23 are formed. Removal of the protecting group by treatment with CF3CO2H /H2O leads to the corresponding 2’,3’-dideoxy-β-D-ribofuranosyl- pyridines.

scholarly journals Furoic Acid and Derivatives as Atypical Dienes in Diels-Alder Reactions

2021 ◽  
Author(s):  
Razvan Cioc ◽  
Tom Smak ◽  
Marc Crockatt ◽  
Jan Kees Van der Waal ◽  
Pieter C A Bruijnincx
Keyword(s):  
Green Chemistry ◽  
Cycloaddition Reaction ◽  
Building Blocks ◽  
Diels Alder ◽  
Furoic Acid

The furan Diels-Alder (DA) cycloaddition reaction has become an important tool in green chemistry, being central to the sustainable synthesis of many chemical building blocks. The restriction to electron-rich furans...

Highly Proton Conductive Phosphoric Acid Porous Organic Polymers via Knitting Method

2021 ◽  
Author(s):  
Tianhao Zhu ◽  
Benbing Shi ◽  
Hong Wu ◽  
Xinda You ◽  
Xiaoyao Wang ◽  
...  
Keyword(s):  
Phosphoric Acid ◽  
Organic Polymers ◽  
Porous Organic Polymers
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