scholarly journals P2O5/SiO2 as an efficient, mild, and heterogeneous catalytic system for the condensation of indoles with carbonyl compounds under solvent-free conditions

ARKIVOC ◽  
2007 ◽  
Vol 2007 (14) ◽  
pp. 39-50 ◽  
Author(s):  
Alireza Hasaninejad ◽  
Abdolkarim Zare ◽  
Hashem Sharghi ◽  
Khodabakhsh Niknam ◽  
Mohsen Shekouhy
Keyword(s):  
Catalytic System ◽  
Carbonyl Compounds ◽  
Solvent Free ◽  
Heterogeneous Catalytic ◽  
Heterogeneous Catalytic System ◽  
Solvent Free Conditions

scholarly journals P2O5/SiO2as an Efficient, Green and Heterogeneous Catalytic System for the Solvent-Free Synthesis of 3,4-Dihydropyrimidin-2-(1H)-ones (and -Thiones)

2009 ◽  
Vol 6 (2) ◽  
pp. 459-465 ◽  
Author(s):  
Alireza Hasaninejad ◽  
Abdolkarim Zare ◽  
Farhad Jafari ◽  
Ahmad Reza Moosavi-Zare
Keyword(s):  
Catalytic System ◽  
Catalytic Amount ◽  
Solvent Free ◽  
Heterogeneous Catalytic ◽  
Heterogeneous Catalytic System ◽  
High Yields ◽  
Solvent Free Synthesis

A simple, green and efficient solventless procedure for the synthesis of 3,4-dihydropyrimidin-2-(1H)-ones (and -thiones) from aldehydes, β-ketoesters and urea or thiourea in the presence of catalytic amount of silica-supported P2O5(P2O5/SiO2) at 85 °C is described. Using this method, the title compounds were produced in high yields.

scholarly journals P2O5/SiO2 an efficient, green and heterogeneous catalytic system for the solvent-free synthesis of N-sulfonyl imines

ARKIVOC ◽  
2008 ◽  
Vol 2008 (11) ◽  
pp. 64-74 ◽  
Author(s):  
Alireza Hasaninejad ◽  
Abdolkarim Zare ◽  
Hashem Sharghi ◽  
Mohsen Shekouhy
Keyword(s):  
Catalytic System ◽  
Solvent Free ◽  
Heterogeneous Catalytic ◽  
Heterogeneous Catalytic System ◽  
Solvent Free Synthesis

scholarly journals Cu(ii) Schiff base complex intercalated into layered double hydroxide for selective oxidation of ethylbenzene under solvent-free conditions

RSC Advances ◽  
2018 ◽  
Vol 8 (34) ◽  
pp. 18814-18827 ◽  
Author(s):  
Jagat Singh Kirar ◽  
Savita Khare
Keyword(s):  
Schiff Base ◽  
Selective Oxidation ◽  
Layered Double Hydroxide ◽  
Catalytic System ◽  
Schiff Base Complex ◽  
Heterogeneous Catalytic ◽  
Heterogeneous Catalytic System ◽  
Solvent Free Conditions ◽  
Oxidation Of Ethylbenzene ◽  
Double Hydroxide

A heterogeneous catalytic system, LDH-[NAPABA–Cu(ii)]/TBHP gave maximum 80.54% conversion and 99.60% selectivity for acetophenone in oxidation of ethylbenzene and catalyst can be reused for seven cycles.

scholarly journals Preparation of Silica Supported Ionic Liquids for Highly Selective Hydroxylation of Aromatics with Hydrogen Peroxide under Solvent-free Conditions

2017 ◽  
Vol 60 (4) ◽  
Author(s):  
Yu Lin Hu ◽  
Dong Fang
Keyword(s):  
Hydrogen Peroxide ◽  
Solvent Free ◽  
Reaction Parameters ◽  
Catalyst Amount ◽  
Heterogeneous Catalytic ◽  
Heterogeneous Catalytic System ◽  
Solvent Free Conditions ◽  
Supported Ionic Liquids ◽  
Selective Hydroxylation ◽  
Selection Of

A series of silica supported functionalized ionic liquid catalysts have been prepared and tested in the hydroxylation of aromatics to phenols with H<sub>2</sub>O<sub>2</sub> under solvent-free conditions. The properties of the heterogeneous catalytic system were studied by tuning various reaction parameters including selection of catalyst, amount of the catalyst, influences of reaction time and temperature. Among the catalysts, CuCl<sub>3</sub>-IL-SiO<sub>2</sub> exhibited the highest efficiency in the hydroxylation of aromatics to phenols under the optimized condition along with good recycle performance.

One-Pot, Regioselective Synthesis of Homopropargyl Alcohols using Propargyl Bromide and Carbonyl Compound by the Mg-mediated Reaction under Solvent-free Conditions

2020 ◽  
Vol 17 (6) ◽  
pp. 438-442
Author(s):  
Xiaofang Ma ◽  
Shunxi Li ◽  
Samrat Devaramani ◽  
Guohu Zhao ◽  
Daqian Xu
Keyword(s):  
Reaction Time ◽  
Organic Synthesis ◽  
Carbonyl Compounds ◽  
Solvent Free ◽  
Propargyl Bromide ◽  
Important Goal ◽  
One Pot ◽  
Short Reaction Time ◽  
Solvent Free Conditions ◽  
Volatile Organic

The elimination of volatile organic solvents in organic synthesis is the most important goal in “Green” chemistry. We report a simple, efficient and facile method for the addition of progargyl bromide to carbonyl compounds using Mg metal as a mediator under solvent-free conditions which could regioselectively generate homopropargyl alcohols efficiently in good to excellent yields. The procedure has advantages such as short reaction time, operationally simple, excellent product yields, high regioselectivity and organic solvent-free.

Clean and Facile Condensations Reaction of Indoles and Carbonyl Compounds under Solvent-Free Conditions.

ChemInform ◽  
2006 ◽  
Vol 37 (39) ◽  
Author(s):  
Shokoufeh Mehrazma ◽  
Najmoddin Azizi ◽  
Mohammad R. Saidi
Keyword(s):  
Carbonyl Compounds ◽  
Solvent Free ◽  
Solvent Free Conditions
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