ChemInform Abstract: PPA-SiO2as a Heterogeneous Catalyst for Efficient Synthesis of 2-Substituted-1,2,3,4-tetrahydro-4-quinazolinones under Solvent-Free Conditions.

ChemInform ◽  
2010 ◽  
Vol 41 (17) ◽  
Author(s):  
Hamid Reza Shaterian ◽  
Ali Reza Oveisi
Keyword(s):  
Heterogeneous Catalyst ◽  
Solvent Free ◽  
Efficient Synthesis ◽  
Solvent Free Conditions

scholarly journals β-cyclodextrin-polyurethane polymer: A neutral and eco-friendly heterogeneous catalyst for the one-pot synthesis of 1,4-dihydropyridine and polyhydroquinolien derivatives via Hantzsch reaction under solvent-free conditions

2014 ◽  
Vol 79 (4) ◽  
pp. 401-409 ◽  
Author(s):  
Ali Kiasat ◽  
Simin Nazari ◽  
Jamal Davarpanah
Keyword(s):  
Heterogeneous Catalyst ◽  
Ammonium Acetate ◽  
Solvent Free ◽  
Hantzsch Reaction ◽  
Efficient Synthesis ◽  
One Pot ◽  
Solvent Free Conditions ◽  
Simple Filtration ◽  
The One ◽  
Efficient Heterogeneous Catalyst

An efficient synthesis of 1,4-dihydropyridine & polyhydroquinolien derivatives using b-Cyclodextrin-polyurethane polymer (?-CDPU) as a stationary microvessel and neutral heterogeneous catalyst via a four component coupling of aldehydes, ?-ketoester (2 mol) and ammonium acetate under solvent-free conditions is described. Compared with the classical Hantzsch reaction, this new method has the advantages of good yield, short reaction time and methodological simplicity. ?-CDPU was proved to be an efficient heterogeneous catalyst which could be easily handled and removed from the reaction mixture by simple filtration, and also recovered and reused without loss of reactivity.

Efficient Synthesis of Tetrahydrobenzo[b]pyrans under Solvent‐Free Conditions at Room Temperature

2006 ◽  
Vol 36 (16) ◽  
pp. 2363-2369 ◽  
Author(s):  
Liangce Rong ◽  
Xiaoyue Li ◽  
Haiying Wang ◽  
Daqing Shi ◽  
Shujiang Tu ◽  
...  
Keyword(s):  
Room Temperature ◽  
Solvent Free ◽  
Efficient Synthesis ◽  
Solvent Free Conditions

Rapid and Efficient Synthesis of Optically Active Pyrazoles under Solvent-Free Conditions.

ChemInform ◽  
2005 ◽  
Vol 36 (8) ◽  
Author(s):  
J. S. Yadav ◽  
B. V. S. Reddy ◽  
G. Satheesh ◽  
P. Naga Lakshmi ◽  
S. Kiran Kumar ◽  
...  
Keyword(s):  
Optically Active ◽  
Solvent Free ◽  
Efficient Synthesis ◽  
Solvent Free Conditions

scholarly journals Synthesis of 2,4,6-triarylpyridines Using AlPO4 Under Solvent-free Conditions

2010 ◽  
Vol 2 (2) ◽  
pp. 337-342 ◽  
Author(s):  
P. Rajput ◽  
N. J. P. Subhashini ◽  
Shiva Raj
Keyword(s):  
Heterogeneous Catalyst ◽  
Simple Procedure ◽  
Reaction Times ◽  
Aluminum Phosphate ◽  
Solvent Free ◽  
One Pot ◽  
One Pot Synthesis ◽  
Solvent Free Conditions

A series of 2,4,6-triarylpyridines have been prepared using a variety of aromatic and heteroaromatic aldehydes in the presence of aluminum phosphate (AlPO4) as a heterogeneous catalyst at 120 oC under solvent-free conditions. The present methodology offers several advantages such as excellent yields, simple procedure, shorter reaction times, milder conditions and the catalyst exhibited remarkable reusable activity. Keywords: Aluminum phosphate; 2,4,6-triarylpyridines; One-pot synthesis; Shorter reaction times;  Reusable activity.  © 2010 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved. DOI: 10.3329/jsr.v2i2.3859               J. Sci. Res. 2 (2), 337-342 (2010) 

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