Microwave Assisted Convenient and Facile Regeneration of Carbonyl Compounds from Semicarbazones, Phenylhydrazones and Tosylhydrazones Using Phosphoric Acid in Solvent-Free Conditions.

ChemInform ◽  
2006 ◽  
Vol 37 (23) ◽  
Author(s):  
Krishna Banerjee ◽  
Alok Kumar Mitra ◽  
Amarendra Patra
Keyword(s):  
Phosphoric Acid ◽  
Carbonyl Compounds ◽  
Solvent Free ◽  
Microwave Assisted ◽  
Solvent Free Conditions

Silicon-based thiourea-mediated and microwave-assisted thio-Michael addition under solvent-free reaction conditions

2011 ◽  
Vol 65 (5) ◽  
Author(s):  
Kamalakannan Prabakaran ◽  
Machindra Gund ◽  
Tae Kim ◽  
Euh Jeong ◽  
Chae Oh ◽  
...  
Keyword(s):  
Michael Addition ◽  
Carbonyl Compounds ◽  
Addition Reaction ◽  
Solvent Free ◽  
Michael Addition Reaction ◽  
Reaction Conditions ◽  
Microwave Assisted ◽  
Solvent Free Conditions ◽  
Silicon Based ◽  
Solvent Free Reaction

AbstractSilicon-based thiourea (SiliaBond® Thiourea) (Si-THU), a heterogeneous catalyst, has been applied to the highly selective C-S bond formation via Michael addition of thiols to α,β-unsaturated carbonyl compounds under solvent-free conditions at 55–60°C. The thio-Michael addition products were obtained in an excellent yield under optimised conditions. This methodology involving a metal-free as well as a metal scavenger catalyst has been found to be an alternative method for the thio-Michael addition reaction.

Remarkable Fast Microwave-assisted Zeolite HZSM-5 Catalyzed Oxidation of Alcohols with Chromium Trioxide under Solvent-free Conditions

1999 ◽  
Vol 23 (5) ◽  
pp. 334-335 ◽  
Author(s):  
Majid M. Heravi ◽  
Dariush Ajami ◽  
Kourosh Tabar-Hydar ◽  
Mitra Ghassemzadeh
Keyword(s):  
Microwave Irradiation ◽  
Carbonyl Compounds ◽  
Chromium Trioxide ◽  
Solvent Free ◽  
Microwave Assisted ◽  
Solvent Free Conditions ◽  
Oxidation Of Alcohols ◽  
Catalyzed Oxidation

A variety of alcohols are oxidized to the corresponding carbonyl compounds in excellent yields by chromium trioxide-HZSM-5 zeolite under microwave irradiation in a solventless system.

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.

Microwave-Assisted Efficient, One-Pot, Three-Component Synthesis of 3,5-Disubstituted 1,2,4-Oxadiazoles under Solvent-Free Conditions.

ChemInform ◽  
2006 ◽  
Vol 37 (32) ◽  
Author(s):  
Mehdi Adib ◽  
Amin Haghighat Jahromi ◽  
Narjes Tavoosi ◽  
Mohammad Mahdavi ◽  
Hamid Reza Bijanzadeh
Keyword(s):  
Solvent Free ◽  
One Pot ◽  
Microwave Assisted ◽  
Solvent Free Conditions

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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