scholarly journals A New Method for Synthesis of 2,4,5-Triaryl-1H-Imidazole Derivatives using SiO2-NaHSO4 under Solvent-free Conditions

2014 ◽  
Vol 30 (1) ◽  
pp. 329-331 ◽  
Author(s):  
Farhad Hatamjafari ◽  
Hadiseh Khojastehkouhi
Keyword(s):  
Solvent Free ◽  
New Method ◽  
Imidazole Derivatives ◽  
Solvent Free Conditions

Efficient synthesis of 2-indolyl-1-nitroalkanes catalyzed by tetramethyl-tetra-3,4-pyridinoporphyrazinato copper(II) methyl sulfate

2012 ◽  
Vol 16 (02) ◽  
pp. 227-234 ◽  
Author(s):  
Elham Safaei ◽  
Sara Sobhani ◽  
Nasrin Razavi
Keyword(s):  
Michael Addition ◽  
Solvent Free ◽  
New Method ◽  
Reusable Catalyst ◽  
Efficient Synthesis ◽  
Methyl Sulfate ◽  
Solvent Free Conditions

A new method for the synthesis of 2-indolyl-1-nitroalkanes from indoles and β-nitrostyrene via Michael addition catalyzed by [ Cu (3,4-tmtppa)] (MeSO4)4 as a reusable catalyst under solvent-free conditions is described. This method has been also successfully applied for Michael addition of 3-methyl-1-phenyl-5-pyrazolone with β-nitrostyrenes.

Achieving enhanced solid-state photochromism and mechanochromism by introducing a rigid steric hindrance group

2021 ◽  
Author(s):  
Junzhao He ◽  
Huimin Zhao ◽  
Han Wu ◽  
Yuhui Yang ◽  
Zhaohui Wang ◽  
...  
Keyword(s):  
Solid State ◽  
Steric Hindrance ◽  
Solvent Free ◽  
New Method ◽  
Solvent Free Conditions ◽  
Photochromic Molecules ◽  
Conformational Freedom

For photochromic molecules, effective isomerization usually requires conformational freedom,which is usually unavailable in solvent-free conditions. In this work, we report a new method, which can realize the reversible switching of...

A new method for the preparation of 1,3,5-triarylbenzenes catalyzed by nanoclinoptilolite/HDTMA

RSC Advances ◽  
2015 ◽  
Vol 5 (15) ◽  
pp. 10869-10877 ◽  
Author(s):  
R. Tayebee ◽  
M. Jarrahi ◽  
B. Maleki ◽  
M. Kargar Razi ◽  
Z. B. Mokhtari ◽  
...  
Keyword(s):  
Efficient Method ◽  
Solvent Free ◽  
New Method ◽  
Reusable Catalyst ◽  
Natural Surface ◽  
Solvent Free Conditions ◽  
Surface Modified

An efficient method for the preparation of 1,3,5-triarylbenzenes. Natural surface-modified NCP as a new and reusable catalyst. Using solvent-free conditions.

Fe3O4@SiO2@polyionene/Br3− core–shell–shell magnetic nanoparticles: a novel catalyst for the synthesis of imidazole derivatives under solvent-free conditions

2016 ◽  
Vol 40 (5) ◽  
pp. 4575-4587 ◽  
Author(s):  
Elham Dezfoolinezhad ◽  
Keivan Ghodrati ◽  
Rashid Badri
Keyword(s):  
Magnetic Nanoparticles ◽  
Magnetite Nanoparticles ◽  
Solvent Free ◽  
Precipitation Method ◽  
Core Shell ◽  
Imidazole Derivatives ◽  
Solvent Free Conditions ◽  
Co Precipitation ◽  
Novel Catalyst

New Fe3O4@SiO2@polyionene/Br3− core–shell–shell magnetite nanoparticles were prepared using a co-precipitation method and were used in the syntheses of imidazole derivatives under solvent-free conditions.

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