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.

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.

scholarly journals ZnO Nanoparticles: A Highly Effective and Readily Recyclable Catalyst for the One-Pot Synthesis of 1,8-dioxo-decahydroacridine and 1,8-dioxooctahydro-xanthene Derivatives

2017 ◽  
Vol 57 (1) ◽  
Author(s):  
Javad Safaei-Ghomi ◽  
Mohammad Ali Ghasemzadeh ◽  
Safura Zahedi
Keyword(s):  
Zno Nanoparticles ◽  
Environmentally Friendly ◽  
Recyclable Catalyst ◽  
Solvent Free ◽  
One Pot ◽  
One Pot Synthesis ◽  
Solvent Free Conditions ◽  
Xanthene Derivatives ◽  
Highly Effective ◽  
The One

ZnO nanoparticles as a worthwhile and recyclable catalyst have been used for the one-pot synthesis of 1,8-dioxo-decahydroacridines and 1,8-dioxooctahydro-xanthenes via multi-component reactions under solvent-free conditions. The presented method is mild, environmentally friendly, inexpensive and highly effective to give the products in good to excellent yields.

scholarly journals Nano-Fe3O4@walnut shell/Cu(ii) as a highly effective environmentally friendly catalyst for the one-pot pseudo three-component synthesis of 1,3-oxazine derivatives under solvent-free conditions

RSC Advances ◽  
2020 ◽  
Vol 10 (53) ◽  
pp. 31874-31880
Author(s):  
Arefeh Dehghani Tafti ◽  
Bi Bi Fatemeh Mirjalili
Keyword(s):  
Alkaline Medium ◽  
Environmentally Friendly ◽  
Solvent Free ◽  
Walnut Shell ◽  
One Pot ◽  
Nano Catalyst ◽  
Solvent Free Conditions ◽  
Highly Effective ◽  
Nano Fe3o4 ◽  
The One

Fe3O4@walnut shell/Cu(ii) as an eco-friendly bio-based magnetic nano-catalyst was prepared by adding CuCl2 to Fe3O4@walnut shell in alkaline medium.

scholarly journals CF2H as a hydrogen bond donor group for the fine tuning of peptide bond geometry with difluoromethylated pseudoprolines

2019 ◽  
Vol 55 (83) ◽  
pp. 12487-12490 ◽  
Author(s):  
N. Malquin ◽  
K. Rahgoshay ◽  
N. Lensen ◽  
G. Chaume ◽  
E. Miclet ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Peptide Bond ◽  
Fine Tuning ◽  
Amide Bond ◽  
Donor Group ◽  
Hydrogen Bond Donor

CF2H-Pseudoprolines obtained from difluoroacetaldehyde hemiacetal and serine are stable proline surrogates. An intramolecular H-bond due to the CF2H group is promoting an exceptionally high content of cis-amide bond conformation.

Ball-milling synthesized hydrotalcite supported Cu–Mn mixed oxide under solvent-free conditions: an active catalyst for aerobic oxidative synthesis of 2-acylbenzothiazoles and quinoxalines

2018 ◽  
Vol 20 (20) ◽  
pp. 4638-4644 ◽  
Author(s):  
Xu Meng ◽  
Xiuru Bi ◽  
Chaoying Yu ◽  
Gexin Chen ◽  
Baohua Chen ◽  
...  
Keyword(s):  
Ball Milling ◽  
Mixed Oxide ◽  
Active Catalyst ◽  
Supported Catalyst ◽  
Catalytic Performance ◽  
Solvent Free ◽  
Solvent Free Conditions ◽  
Excellent Catalytic Performance

Ball-milling results in excellent catalytic performance of bimetallic supported catalyst Cu–Mn/HT.

2-Ethyl-1-[5-(4-methylphenyl)pyrazol-3-yl]-3-(thiophene-2-carbonyl)isothiourea: molecular ribbons containing three types of hydrogen-bonded ring

2014 ◽  
Vol 70 (11) ◽  
pp. 1064-1068
Author(s):  
Edison Castro ◽  
Henry Insuasty ◽  
Braulio Insuasty ◽  
Justo Cobo ◽  
Christopher Glidewell
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Microwave Irradiation ◽  
Title Compound ◽  
Pyrazole Ring ◽  
Solvent Free ◽  
Compound C ◽  
Solvent Free Conditions ◽  
Hydrogen Bonded

The title compound, C18H18N4OS2, was prepared by reaction ofS,S-diethyl 2-thenoylimidodithiocarbonate with 5-amino-3-(4-methylphenyl)-1H-pyrazole using microwave irradiation under solvent-free conditions. In the molecule, the thiophene unit is disordered over two sets of atomic sites, with occupancies of 0.814 (4) and 0.186 (4), and the bonded distances provide evidence for polarization in the acylthiourea fragment and for aromatic type delocalization in the pyrazole ring. An intramolecular N—H...O hydrogen bond is present, forming anS(6) motif, and molecules are linked by N—H...O and N—H...N hydrogen bonds to form a ribbon in which centrosymmetricR22(4) rings, built from N—H...O hydrogen bonds and flanked by inversion-related pairs ofS(6) rings, alternate with centrosymmetricR22(6) rings built from N—H...N hydrogen bonds.

Cholinium ionic liquids as cheap and reusable catalysts for the synthesis of coumarins via Pechmann reaction under solvent-free conditions

RSC Advances ◽  
2014 ◽  
Vol 4 (44) ◽  
pp. 22946-22950 ◽  
Author(s):  
Yuehua Zhang ◽  
Anlian Zhu ◽  
Qianqian Li ◽  
Lingjun Li ◽  
Yang Zhao ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Ethyl Acetoacetate ◽  
Catalytic Performance ◽  
Solvent Free ◽  
Reusable Catalyst ◽  
Pechmann Reaction ◽  
Solvent Free Conditions

Ionic liquid [N112OH][HSO4] was found to be an efficient and reusable catalyst for Pechmann reaction under solvent-free conditions. UV-vis studies suggested that the high catalytic performance of this catalyst was mainly due to its ability to increase the content of keto tautomer of ethyl acetoacetate.

Highly effective synthesis of 1-thioamidoalkyl-2-naphthols and tetrahydropyridines using a nanostructured silica-based catalyst under mild conditions

2020 ◽  
Vol 23 ◽  
Author(s):  
Navid Irannejad-Gheshlaghchaei ◽  
Seyed Sajad Sajadikhah
Keyword(s):  
Solvent Free ◽  
One Pot ◽  
Mild Conditions ◽  
Solvent Free Conditions ◽  
Highly Effective ◽  
Effective Synthesis ◽  
The One ◽  
Yield Time ◽  
High Yields ◽  
Nanostructured Silica

Aim and Objective: Nano-2-[N',N'-dimethyl-N'-(silica-n-propyl)ethanaminium chloride]-N,N-dimethylaminium bisulfate (nano-[DSPECDA][HSO4]) was used as a highly effective and heterogeneous silica-based nanostructured catalyst for the synthesis of 1-thioamidoalkyl-2-naphthols and substituted tetrahydropyridines. Material and Methods: The expected products were prepared in mild conditions. In this work, three novel 1- thioamidoalkyl-2-naphthols and two new tetrahydropyridine derivatives were synthesized and characterized by IR, 1H and 13C NMR and Mass spectroscopy. Results: One-pot multi-component condensation of 2-naphthol with arylaldehydes and thioacetamide catalyzed by nano- [DSPECDA][HSO4] under green, mild and solvent-free conditions led to 1-thioamidoalkyl-2-naphthols in high yields. The nanocatalyst was also used for the preparation of functionalized tetrahydropyridines by the one-pot multi-component reaction of anilines, arylaldehydes and ethylacetoacetate under solvent-free and mild conditions. Conclusion: The reactions results are better compared to the literature in terms of one or more of these factors: yield, time, and the reaction media. All the products were purified by recrystallization from EtOH, and without column chromatography, which is good agreement with the green chemistry protocols.

ChemInform Abstract: Isolation of Magnetic Material from Fly Ash and Its Catalytic Performance for N-Acetylation under Solvent Free Conditions.

ChemInform ◽  
2013 ◽  
Vol 44 (49) ◽  
pp. no-no
Author(s):  
Aashish O. Dhokte ◽  
Uzmaparveen K. Shaikh ◽  
Machhindra K. Lande ◽  
Balasaheb R. Arbad
Keyword(s):  
Magnetic Material ◽  
Fly Ash ◽  
Catalytic Performance ◽  
Solvent Free ◽  
Solvent Free Conditions
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