A Novel Microwave-Assisted One-Pot Synthesis of Pyrano[2,3-d]pyrimidines and Pyrido[2,3-d]pyrimidines via a Three-Component Reaction in Solvent-Free Condition.

ChemInform ◽  
2004 ◽  
Vol 35 (24) ◽  
Author(s):  
Ipsita Devi ◽  
Pulak J. Bhuyan
Keyword(s):  
Solvent Free ◽  
One Pot ◽  
Free Condition ◽  
Microwave Assisted ◽  
One Pot Synthesis ◽  
Solvent Free Condition ◽  
Three Component Reaction

scholarly journals Versatile Microwave-Assisted and Lanthanum Chloride Catalysed Synthesis of Polysubstituted Imidazoles Using Urea/Thiourea as Benign Source of Ammonia

2012 ◽  
Vol 9 (4) ◽  
pp. 1773-1777 ◽  
Author(s):  
Mohammad Reza Manafi ◽  
Pedram Manafi ◽  
Mohammad Reza Kalaee
Keyword(s):  
Solvent Free ◽  
Lanthanum Chloride ◽  
Environmentally Benign ◽  
One Pot ◽  
Free Condition ◽  
Effective Catalyst ◽  
Microwave Assisted ◽  
One Pot Synthesis ◽  
Solvent Free Condition ◽  
Work Up

Lanthanum chloride was found to be an effective catalyst for the facile and one-pot synthesis of polysubstituted imidazoles under solvent free condition in excellent yields. This method elucidates urea/thiourea, as an environmentally benign source of ammonia for the synthesis of polysubstituted imidazoles. The work-up procedure is very simple and the products don’t require further purification.

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