One-Pot Synthesis of 3,4-Dihydropyrimidin-2(1H)-ones/-thiones Catalyzed by Zinc Chloride: An Improved Procedure for the Biginelli Reaction Using Microwaves under Solvent-Free Condition.

ChemInform ◽  
2005 ◽  
Vol 36 (34) ◽  
Author(s):  
M. A. Pasha ◽  
N. Ramachandra Swamy ◽  
V. P. Jayashankara
Keyword(s):  
Zinc Chloride ◽  
Biginelli Reaction ◽  
Solvent Free ◽  
One Pot ◽  
Free Condition ◽  
One Pot Synthesis ◽  
Solvent Free Condition

Sulfated polyborate: a new and eco-friendly catalyst for one-pot multi-component synthesis of 3,4-dihydropyrimidin-2(1H)-ones/thiones via Biginelli reaction

2016 ◽  
Vol 40 (12) ◽  
pp. 10412-10417 ◽  
Author(s):  
Chetan K. Khatri ◽  
Deelip S. Rekunge ◽  
Ganesh U. Chaturbhuj
Keyword(s):  
Biginelli Reaction ◽  
Solvent Free ◽  
Synthetic Methodology ◽  
One Pot ◽  
Free Condition ◽  
Sulfated Polyborate ◽  
Highly Efficient ◽  
Excellent Yield ◽  
Solvent Free Condition

A highly efficient and improved synthetic methodology for the preparation of 3,4-dihydropyrimidin-2(1H)-one derivatives in good to excellent yield via Biginelli reaction of β-ketoesters/β-diketone, urea/thiourea and various aldehydes using new, efficient and recyclable sulfated polyborate catalyst under the solvent-free condition is reported.

scholarly journals Investigation of Various Organocatalysts for Improved and Efficient One Pot Synthesis of 2,3-Dihydro-1H-1,5-benzodiazepines Under Solvent-Free Condition

2014 ◽  
Vol 26 (16) ◽  
pp. 5116-5120
Author(s):  
Yuhao Zhao ◽  
Shikha Sharma ◽  
Minghua Huang ◽  
Akshdeep Sandhar ◽  
Rajesh K. Singh ◽  
...  
Keyword(s):  
Solvent Free ◽  
One Pot ◽  
Free Condition ◽  
One Pot Synthesis ◽  
Solvent Free Condition
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