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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 20, 1990 - Issue 4
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Original Articles

Claisen Rearrangement of 4-Propargloxycoumarins: Formation of 2H,5H-Pyrano[3,2-c][1]benzopyran-5-ones

Ch. Prasad Rao Department of Chemistry, Osmania University, Hyderabad, 500 007, India
&
G. Srimannarayana Department of Chemistry, Osmania University, Hyderabad, 500 007, India
Pages 535-540 | Received 11 Oct 1989, Published online: 24 Oct 2006
 
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Abstract

The Claisen rearrangement of 4-propargyloxycoumarins affords 2H, 5H-pyrano[3,2-c][1]benzopyrans-5-ones as the only product. The effect of solvent on the Claisen rearrangement has been examined.

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