Sulfamic Acid Catalyzed Michael Addition of Indoles and Pyrrole to Electron-Deficient Nitroolefins under Solvent-Free Condition.

ChemInform ◽  
2007 ◽  
Vol 38 (39) ◽  
Author(s):  
Li-Tao An ◽  
Jian-Ping Zou ◽  
Li-Li Zhang ◽  
Yong Zhang
Keyword(s):  
Michael Addition ◽  
Sulfamic Acid ◽  
Solvent Free ◽  
Free Condition ◽  
Solvent Free Condition ◽  
Acid Catalyzed

scholarly journals Nanosphere of Semicrystalline Polyaniline Powder: An Effective, Versatile, and Reusable Catalyst for Hantzsch Reaction

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Ravi Bolagam ◽  
Rajender Boddula ◽  
Palaniappan Srinivasan
Keyword(s):  
Interfacial Polymerization ◽  
Acid Group ◽  
Solvent Free ◽  
Reusable Catalyst ◽  
Powder Form ◽  
Hantzsch Reaction ◽  
Diphosphonic Acid ◽  
Free Condition ◽  
Solvent Free Condition ◽  
Acid Catalyzed

Polyaniline salt containing 1-hydroxyethane-1,1-diphosphonic acid with nanosphere morphology in semicrystalline powder form was successfully synthesized by interfacial polymerization pathway and demonstrated as polymer based acid catalyzed in the synthesis of 1,4-dihydropyridines and polyhydroquinoline derivatives. This catalyst promotes the reaction under solvent free condition in excellent yield in 10 min with recyclability. The advantages of this methodology are the easy synthesis of polymer containing acid group catalyst in powder form having easily handlable, efficient, versatile, and reusable nature.

Sulfamic-Acid-Functionalized Fe3-xTixO4Nanoparticles as Novel Magnetic Catalyst for the Synthesis of Hexahydroquinolines under Solvent-Free Condition

2018 ◽  
Vol 3 (48) ◽  
pp. 13722-13728 ◽  
Author(s):  
Davood Azarifar ◽  
Roshanak Asadpoor ◽  
Omolbanin Badalkhani ◽  
Mehdi Jaymand ◽  
Elham Tavakoli ◽  
...  
Keyword(s):  
Sulfamic Acid ◽  
Solvent Free ◽  
Free Condition ◽  
Magnetic Catalyst ◽  
Solvent Free Condition
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