An Efficient and Rapid Approach to Quinolines via Friedländer Synthesis Catalyzed by Silica Gel Supported Sodium Hydrogen Sulfate Under Solvent-Free Conditions

2007 ◽  
Vol 138 (7) ◽  
pp. 659-661 ◽  
Author(s):  
Minoo Dabiri ◽  
Seyyedeh Cobra Azimi ◽  
Ayoob Bazgir
Keyword(s):  
Silica Gel ◽  
Solvent Free ◽  
Hydrogen Sulfate ◽  
Sodium Hydrogen ◽  
Solvent Free Conditions ◽  
Friedlander Synthesis

Silica Gel Supported Sodium Hydrogen Sulfate as an Efficient and Reusable Heterogeneous Catalyst for the Synthesis of Imines in Solvent-free Conditions under Microwave Irradiation

2005 ◽  
Vol 2005 (5) ◽  
pp. 299-303 ◽  
Author(s):  
Mannathusamy Gopalakrishnan ◽  
Purushothaman Sureshkumar ◽  
Vijayakumar Kanagarajan ◽  
Jeyaraman Thanusu ◽  
Ramalingam Govindaraju
Keyword(s):  
Microwave Irradiation ◽  
Heterogeneous Catalyst ◽  
Silica Gel ◽  
Diethyl Ether ◽  
Carbonyl Compounds ◽  
Solvent Free ◽  
Hydrogen Sulfate ◽  
Sodium Hydrogen ◽  
Solvent Free Conditions

This synthesis of imines has been carried out efficiently by the condensation of carbonyl compounds with amines in the presence of silica gel supported sodium hydrogen sulfate (NaHSO4.SiO2) as a heterogeneous catalyst under microwave irradiation in solvent-free conditions. NaHSO4.SiO2 can be recovered and re-used up to ten times by simple washing with diethyl ether after each use and activated in an oven at 120 °C for 1 h, thus rendering the process more economical.

Silica Gel Supported Sodium Hydrogen Sulfate as an Efficient and Reusable Heterogeneous Catalyst for the Synthesis of Imines in Solvent-Free Conditions under Microwave Irradiation.

ChemInform ◽  
2005 ◽  
Vol 36 (43) ◽  
Author(s):  
Mannathusamy Gopalakrishnan ◽  
Purushothaman Sureshkumar ◽  
Vijayakumar Kanagarajan ◽  
Jeyaraman Thanusu ◽  
Ramalingam Govindaraju
Keyword(s):  
Microwave Irradiation ◽  
Heterogeneous Catalyst ◽  
Silica Gel ◽  
Solvent Free ◽  
Hydrogen Sulfate ◽  
Sodium Hydrogen ◽  
Solvent Free Conditions
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