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2870122 
Journal Article 
ZrCl4-catalyzed Pechmann reaction: Synthesis of coumarins under solvent-free conditions 
Smitha, G; Reddy, CS 
2004 
Synthetic Communications
ISSN: 0039-7911 
34 
21 
3997-4003 
phenol; keto ester; zirconium (IV) chloride; Pechmann reaction; coumarin