scholarly journals LiClO4 CATALYZED AZA-MICHAEL ADDITION OF SECONDARY AMINES TO α,β-UNSATURATED ESTERS UNDER A SOLVENT-FREE CONDITION

2018 ◽  
Vol 54 (2C) ◽  
pp. 537
Author(s):  
Dau Xuan Duc
Keyword(s):  
Michael Addition ◽  
Solvent Free ◽  
Secondary Amines ◽  
Free Condition ◽  
Unsaturated Esters ◽  
Amino Esters ◽  
Solvent Free Condition ◽  
High Yields

An efficient aza-Michael addition of secondary amines to some α,β-unsaturated esters hasbeen carried out using LiCLO4 as a catalyst. β-amino esters were obtained in high yields at roomtemperature without using solvent.

scholarly journals A Facile One-Pot Solvent-Free Synthesis of 1,2-Dihydro-1-arylnaphtho[1,2-e][1,3]oxazine-3-ones Catalyzed by Wet Cyanuric Chloride

2013 ◽  
Vol 2013 ◽  
pp. 1-4 ◽  
Author(s):  
Firouzeh Nemati ◽  
Azam Beyzai
Keyword(s):  
Organic Solvent ◽  
Simple Procedure ◽  
Reaction Times ◽  
Solvent Free ◽  
Cyanuric Chloride ◽  
One Pot ◽  
Free Condition ◽  
Solvent Free Condition ◽  
High Yields ◽  
Solvent Free Synthesis

A novel one-pot synthesis of 1,2-dihydro-1-arylnaphtho[1,2-e][1,3]oxazine-3-ones by condensation of a variety of aldehydes withβ-naphthol and urea or thiourea in the presence of wet cyanuric chloride under solvent-free condition has been described. High yields, simple procedure, easy workup, short reaction times, and avoiding the use of organic solvent are the advantages of this green methodology.

scholarly journals KF supported on montmorillonite K10 catalyzed one-pot synthesis of 4H-pyran derivatives under ultrasound irradiation and solvent-free condition

2016 ◽  
Vol 19 (1) ◽  
pp. 5-10
Author(s):  
Dung Duc Pham ◽  
Huyen Ngoc Chau ◽  
Thach Ngoc Le
Keyword(s):  
Aromatic Aldehyde ◽  
Mild Condition ◽  
Ultrasound Irradiation ◽  
Solvent Free ◽  
One Pot ◽  
Free Condition ◽  
Montmorillonite K10 ◽  
Solvent Free Condition ◽  
High Yields ◽  
Short Time

KF supported on montmorillonite K10 catalyzed three-component cyclocondensation of aromatic aldehyde, cyclohexan-1,3-dione and malononitrile under ultrasound irradiation and solvent-free condition to give the corresponding 4H-pyrans in high yields. This method provides several advantages such as short time, mild condition and the catalyst can be recycled easily.

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