ChemInform Abstract: Phospho Sulfonic Acid Catalyzed Mild and Efficient Synthesis of 2,3-Dihydroquinazolin-4-(1H)-ones in Aqueous Ethanol Medium.

ChemInform ◽  
2015 ◽  
Vol 46 (42) ◽  
pp. no-no
Author(s):  
K. Aswin ◽  
S. Sheik Mansoor ◽  
R. Nasir Ahmed
Keyword(s):  
Sulfonic Acid ◽  
Aqueous Ethanol ◽  
Efficient Synthesis ◽  
Ethanol Medium ◽  
Acid Catalyzed

Proline-Catalyzed Simple and Efficient Synthesis of 1,8-Dioxo-decahydroacridines in Aqueous Ethanol Medium

2008 ◽  
Vol 39 (2) ◽  
pp. 228-241 ◽  
Author(s):  
K. Venkatesan ◽  
Suresh S. Pujari ◽  
Kumar V. Srinivasan
Keyword(s):  
Aqueous Ethanol ◽  
Efficient Synthesis ◽  
Ethanol Medium

An Efficient Synthesis of 2-Substituted Quinazolin-4(3H)-ones by Using Recyclable Wang Resin Supported Sulfonic Acid Catalyst

2020 ◽  
Vol 17 ◽  
Author(s):  
Kalyani K. ◽  
Srinivasa Reddy Kallam
Keyword(s):  
Sulfonic Acid ◽  
Functional Group ◽  
Acid Catalyst ◽  
Sulphonic Acid ◽  
Isatoic Anhydride ◽  
Efficient Synthesis ◽  
Wang Resin ◽  
Polymer Supported ◽  
High Yields

Abstract:: An efficient synthesis of 2-substituted Quinazolin-4(3H)-ones has been developed from isatoic anhydride with various amidoximes by using recyclable polymer supported sulphonic acid catalyst. Excellent functional group compatibil-ity and high yields are the important features of this protocol.

ChemInform Abstract: Polymer-Supported Sulfonic Acid Catalyzed Three-Component One-Pot Synthesis of α-Amidoalkyl-β-naphthols.

ChemInform ◽  
2009 ◽  
Vol 40 (11) ◽  
Author(s):  
Li-Tao An ◽  
Xiao-Hua Lu ◽  
Fei-Qing Ding ◽  
Wen-Qing Jiang ◽  
Jian-Ping Zou
Keyword(s):  
Sulfonic Acid ◽  
One Pot ◽  
One Pot Synthesis ◽  
Acid Catalyzed ◽  
Polymer Supported

scholarly journals Efficient Synthesis of Readily Water-Soluble Sulfonic Acid Carbamates

Molecules ◽  
2015 ◽  
Vol 20 (4) ◽  
pp. 6856-6865 ◽  
Author(s):  
Krzysztof Idzik ◽  
Karsten Nödler ◽  
Tobias Licha
Keyword(s):  
Sulfonic Acid ◽  
Water Soluble ◽  
Efficient Synthesis

Efficient Synthesis of Chromenes from Vinyl o-Quinone Methides via a Brønsted Acid Catalyzed Electrocyclization Process

Synthesis ◽  
2018 ◽  
Vol 50 (12) ◽  
pp. 2416-2422 ◽  
Author(s):  
Man-Su Tu ◽  
Guang-Jian Mei ◽  
Feng Shi ◽  
Si-Jia Liu ◽  
Xiao-Li Jiang ◽  
...  
Keyword(s):  
Efficient Method ◽  
Research Area ◽  
Environmentally Benign ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Efficient Synthesis ◽  
Quinone Methides ◽  
Efficient Approach ◽  
Brönsted Acid ◽  
Acid Catalyzed

An efficient approach for the synthesis of chromene derivatives from vinyl o-quinone methides was established via a Brønsted acid catalyzed electrocyclization. By using this methodology, a series of structurally diversified chromenes was synthesized in a highly atom-economic and environmentally benign manner with generally good to excellent yields (up to 98% yield). This reaction will not only provide an efficient method for the construction of chromene scaffolds, but also enrich the research area of o-quinone methides.

Study on the Synthesis of Carboxymethylpachyman in the Aqueous-Ethanol Medium with the Assistance of Ultrasonics

2011 ◽  
Vol 236-238 ◽  
pp. 2810-2814
Author(s):  
Yong Jiang Wang ◽  
Xue Qian Wu ◽  
Shi Wang Liu ◽  
Yuan Feng Wu ◽  
Yan Ping Zhang
Keyword(s):  
Biological Activity ◽  
Aqueous Ethanol ◽  
Reaction Medium ◽  
Volume Ratio ◽  
Value Added ◽  
Poria Cocos ◽  
A Value ◽  
Ethanol Medium ◽  
Favorable Conditions ◽  
Carboxymethyl Pachyman

Water-insoluble β - ( 1 - 3 ) – D - glucan isolated from the sclerotium of Poria cocos hardly exhibits biological activity. Therefore, it is advantageous to produce a value-added product from Poria cocos. We extracted the β - ( 1 - 3 ) – D - glucan from the sclerotium of Poria cocos and synthesized a carboxymethylated derivative, carboxymethyl-pachyman (CMP). The influences on the degrees of substitution ( DS ) of CMP, for example, volume ratio of ethanol to water, [NaOH]/[MCA] ratio, reaction temperature and reaction time have been examined, respectively. The most favorable conditions for pachyman carboxymethylation are obtained with a [NaOH]/[MCA] ratio of 1.5, at 45°C for 60 minutes with a reaction medium consisting of a ethanol/water 80:20 (v/v) mixture.

Acid-Catalyzed Rearrangement of Diaryl Hydrazides for the Efficient Synthesis of Functionalized 2,2‘-Diamino-1,1‘-biaryls

2004 ◽  
Vol 69 (17) ◽  
pp. 5778-5781 ◽  
Author(s):  
Young-Kwan Lim ◽  
Jin-Woo Jung ◽  
Haiwon Lee ◽  
Cheon-Gyu Cho
Keyword(s):  
Efficient Synthesis ◽  
Acid Catalyzed
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