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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 47, 2017 - Issue 2
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Original Articles

Synthesis of 4-phenyloxazinones via DBU-catalyzed cleavage of 4-bromomethylcoumarins

Devadas ShamalaP.G. Department of Chemistry, Central College Campus, Bangalore University, Bangalore, Karnataka, India
&
Kalegowda ShivashankarP.G. Department of Chemistry, Central College Campus, Bangalore University, Bangalore, Karnataka, IndiaCorrespondence[email protected]
Pages 105-110 | Received 06 Jun 2016, Published online: 18 Dec 2016
 
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ABSTRACT

A new route for ring transformation has been discovered during the reaction of 4-bromomethylcoumarins with hydroxyl amine in the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU), leading to the formation of pharmacologically important 1,2-oxazinones in a single step with very high yields.

GRAPHICAL ABSTRACT

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