ChemInform Abstract: Efficient Synthesis of Mono- and Disubstituted 2,3-Dihydroquinazolin-4(1H)-ones Using Copper Benzenesulfonate as a Reusable Catalyst in Aqueous Solution.

ChemInform ◽  
2012 ◽  
Vol 43 (33) ◽  
pp. no-no
Author(s):  
Min Wang ◽  
Ting T. Zhang ◽  
Yan Liang ◽  
Jing J. Gao
Keyword(s):  
Aqueous Solution ◽  
Reusable Catalyst ◽  
Efficient Synthesis

Highly efficient synthesis of 5-hydroxymethylfurfural with carbohydrates over renewable cyclopentanone-based acidic resin

2017 ◽  
Vol 19 (8) ◽  
pp. 1855-1860 ◽  
Author(s):  
Hao Tang ◽  
Ning Li ◽  
Fang Chen ◽  
Guangyi Li ◽  
Aiqin Wang ◽  
...  
Keyword(s):  
Reusable Catalyst ◽  
Efficient Synthesis ◽  
Highly Efficient ◽  
Acidic Resin

A sulfated cyclopentanone-formaldehyde condensate was found to be an effective and reusable catalyst for the dehydration of fructose to 5-hydroxymethylfurfural (HMF).

ChemInform Abstract: Ligand-Free, Highly Efficient Synthesis of Diaryl Ether over Copper Fluorapatite as Heterogeneous Reusable Catalyst.

ChemInform ◽  
2012 ◽  
Vol 43 (28) ◽  
pp. no-no
Author(s):  
Shafeek A. R. Mulla ◽  
Suleman M. Inamdar ◽  
Mohsinkhan Y. Pathan ◽  
Santosh S. Chavan
Keyword(s):  
Reusable Catalyst ◽  
Efficient Synthesis ◽  
Highly Efficient ◽  
Diaryl Ether ◽  
Ligand Free

Efficient synthesis of mono- and disubstituted 2,3-dihydroquinazolin-4(1H)-ones using KAl(SO4)2·12H2O as a reusable catalyst in water and ethanol

2005 ◽  
Vol 46 (36) ◽  
pp. 6123-6126 ◽  
Author(s):  
Minoo Dabiri ◽  
Peyman Salehi ◽  
Somayeh Otokesh ◽  
Mostafa Baghbanzadeh ◽  
Gholamreza Kozehgary ◽  
...  
Keyword(s):  
Reusable Catalyst ◽  
Efficient Synthesis

An efficient and eco-friendly method for the thiol-Michael addition in aqueous solutions using amino acid ionic liquids (AAILs) as organocatalysts

2020 ◽  
Vol 92 (1) ◽  
pp. 97-106
Author(s):  
Roberto Figueroa Guíñez ◽  
José G. Santos ◽  
Ricardo A. Tapia ◽  
Jackson J. Alcazar ◽  
Margarita E. Aliaga ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Ionic Liquids ◽  
Amino Acid ◽  
Efficient Method ◽  
Michael Addition ◽  
Rate Constants ◽  
Michael Reaction ◽  
High Rate ◽  
Reusable Catalyst ◽  
Reaction Conditions

AbstractA series of amino-acid based ionic liquids (Bmim[AA]s) have been synthesized and evaluated as catalysts, in aqueous solution. The results of a kinetic study of the thiol-Michael reaction of L-Cysteine with trans-β-nitrostyrene demonstrated the advantages of using (Bmim[AA]s) as organocatalysts. The benefits include high rate constants; mild reaction conditions; and, a reusable catalyst, which leads to a simple and efficient method for these important kinds of reactions.

Efficient Synthesis 2,3-Dihydroquinazolin-4(1H)-Ones Using Coconut Shell Char Sulfonic Acid as a Reusable Catalyst in Ethanol

2014 ◽  
Vol 989-994 ◽  
pp. 83-86
Author(s):  
Xuan Yan Liu ◽  
Zhi Gao Yang
Keyword(s):  
Sulfonic Acid ◽  
Biginelli Reaction ◽  
Acid Catalyst ◽  
Coconut Shell ◽  
Reusable Catalyst ◽  
Efficient Synthesis ◽  
One Pot ◽  
Efficient Catalyst ◽  
Three Component Reaction ◽  
High Yields

3,4-Dihydropyrimidin-2(1H)-ones derivatives were synthesized in moderate to high yields in one-pot three component reaction from the corresponding aldehydes, 1,3-dicarbonyl compounds and urea, Coconut shell char sulfonic acid (CSCSA) used as a reusable, and efficient catalyst. Compared to the classical acid catalyst, This new protocol for the Biginelli reaction includes the following important features: excellent yields, non-toxic, inexpensive and easily available reagent.

scholarly journals A Solvent-Free Protocol for the Green Synthesis of 5-Arylidene-2,4-thiazolidinediones Using Ethylenediamine Diacetate as Catalyst

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Yuliang Zhang ◽  
Zhongqiang Zhou
Keyword(s):  
Knoevenagel Condensation ◽  
Aromatic Aldehydes ◽  
Solvent Free ◽  
Reusable Catalyst ◽  
Efficient Synthesis ◽  
Reaction Conditions ◽  
Solvent Free Conditions ◽  
High Yields ◽  
Work Up ◽  
Solvent Free Reaction

A simple and efficient synthesis of 5-arylidene-2,4-thiazolidinediones by the Knoevenagel condensation of aromatic aldehydes with 2,4-thiazolidinedione catalyzed by ethylenediamine diacetate under solvent-free conditions is described. The major advantages of this method are simple experimental and work-up procedures, solvent-free reaction conditions, small amount of catalyst, short reaction time, high yields, and utilization of an inexpensive and reusable catalyst.

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