B-Doped and NH2-functionalized SBA-15 with hydrogen bond donor groups for effective catalysis of CO2 cycloaddition to epoxides

2020 ◽  
Vol 7 (19) ◽  
pp. 3636-3645 ◽  
Author(s):  
Yifei Ye ◽  
Dazhi Li ◽  
Ping Xu ◽  
Jianmin Sun
Keyword(s):  
Hydrogen Bond ◽  
Lewis Acid ◽  
Catalytic Performance ◽  
Solvent Free ◽  
The Novel ◽  
Hydrogen Bond Donor ◽  
Acid Base ◽  
Solvent Free Conditions ◽  
Base Properties

The novel B-SBA-15-NH2 catalyst with Lewis acid–base properties and hydrogen bond donor groups exhibited good catalytic performance for CO2 conversion under metal- and solvent-free conditions.

Dual hydrogen-bond donor group-containing Zn-MOF for the highly effective coupling of CO2 and epoxides under mild and solvent-free conditions

2020 ◽  
Vol 7 (10) ◽  
pp. 1995-2005 ◽  
Author(s):  
Ziyu Gao ◽  
Xiao Zhang ◽  
Ping Xu ◽  
Jianmin Sun
Keyword(s):  
Hydrogen Bond ◽  
Catalytic Performance ◽  
Solvent Free ◽  
Donor Group ◽  
Hydrogen Bond Donor ◽  
Effective Coupling ◽  
Solvent Free Conditions ◽  
Highly Effective

A novel 3D Zn3(L)3(H2L) MOF with dual hydrogen-bond donor (HBD) groups exhibited an efficient catalytic performance for the CO2 cycloaddition with epoxides under 80 °C, 1.0 MPa and solvent-free conditions.

The design of a novel and resistant Zn(PZDC)(ATZ) MOF catalyst for the chemical fixation of CO2 under solvent-free conditions

2019 ◽  
Vol 6 (1) ◽  
pp. 317-325 ◽  
Author(s):  
Yixing Li ◽  
Xiao Zhang ◽  
Ping Xu ◽  
Zimin Jiang ◽  
Jianmin Sun
Keyword(s):  
Catalytic Activity ◽  
Lewis Acid ◽  
Solvent Free ◽  
High Catalytic Activity ◽  
Chemical Fixation ◽  
Acid Base ◽  
Solvent Free Conditions

Novel Zn(PZDC)(ATZ) with Lewis acid–base sites exhibited strong resistance to acids/alkalis and moisture and possessed high catalytic activity for CO2 transformation.

Lewis Acid–Base Bifunctional Crystals with a Three-Dimensional Framework for Selective Coupling of CO2 and Epoxides under Mild and Solvent-Free Conditions

2016 ◽  
Vol 17 (1) ◽  
pp. 51-57 ◽  
Author(s):  
Xiangxiang Gao ◽  
Mengshuai Liu ◽  
Jianwen Lan ◽  
Lin Liang ◽  
Xiao Zhang ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Three Dimensional ◽  
Solvent Free ◽  
Acid Base ◽  
Solvent Free Conditions

scholarly journals Efficacy of Selenourea Organocatalysts in Asymmetric Michael Reactions under Standard and Solvent-Free Conditions

Molecules ◽  
2021 ◽  
Vol 26 (23) ◽  
pp. 7303
Author(s):  
Mariola Zielińska-Błajet ◽  
Żaneta A. Mała ◽  
Rafał Kowalczyk
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Ball Mill ◽  
Solvent Free ◽  
Cinchona Alkaloid ◽  
Bifunctional Catalysts ◽  
The Novel ◽  
Michael Reactions ◽  
Solvent Free Conditions ◽  
Hydrogen Bond Donors

By varying the steric and electronic surroundings of the hydrogen-bonding motif, the novel chiral Cinchona-alkaloid based selenoureas were developed. Acting as bifunctional catalysts, they were applied in the Michael reactions of dithiomalonate and nitrostyrene providing chiral adducts with up to 96% ee. The asymmetric Michael–-hemiacetalization reaction of benzylidene pyruvate and dimedone, performed with the assistance of 5 mol% of selenoureas, furnished the product with up to 93% ee and excellent yields. The effectiveness of the new hydrogen-bond donors was also proved in solvent-free reactions under ball mill conditions, supporting the sustainability of the devised catalytic protocol.

Solvation and redox properties of [Co(en)3]3+-[Co(en)3]2+ system

1980 ◽  
Vol 45 (2) ◽  
pp. 335-338 ◽  
Author(s):  
Adéla Kotočová ◽  
Ulrich Mayer
Keyword(s):  
Hydrogen Bond ◽  
Lewis Acid ◽  
Specific Interaction ◽  
Redox Properties ◽  
Solvation Effect ◽  
Interacting Particles ◽  
Acid Base ◽  
Polar Solvents ◽  
Oxidation Reduction ◽  
Solvent Molecules

The solvation effect of a number of nonaqueous polar solvents was studied on the oxidation-reduction properties of the [Co(en)3]3+-[Co(en)3]2+ system. Interactions of these ions with the solvent molecules are discussed in terms of their coordination, which is accompanied by a specific interaction of the Lewis acid-base type, namely formation of a hydrogen bond between the interacting particles. This is the main controlling factor of the redox properties of the studied system.

Zirconocene-catalyzed direct (trans)esterification of acyl acids (esters) and alcohols in a strict 1 : 1 ratio under solvent-free conditions

2017 ◽  
Vol 19 (22) ◽  
pp. 5396-5402 ◽  
Author(s):  
Zhi Tang ◽  
Qiutao Jiang ◽  
Lifen Peng ◽  
Xinhua Xu ◽  
Jie Li ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Solvent Free ◽  
Highly Efficient ◽  
Water Tolerance ◽  
Solvent Free Conditions ◽  
Strong Lewis Acid

A highly efficient way for the direct (trans)esterification of acyl acids (esters) and alcohols in a strict 1 : 1 ratio using a zirconocene complex (1, 1 mol%), a strong Lewis acid of good water tolerance, as a catalyst under solvent-free conditions has been developed.

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