Synthesis of 2-substituted-4H-3,1-benzoxazin-4-ones
- 1 January 1968
- journal article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society C: Organic
- p. 1593-1597
- https://doi.org/10.1039/j39680001593
Abstract
Anthranilic acid (1 mol.) reacted in pyridine solution with benzoyl chloride (2 mol.) to give 2-phenyl-4H-3,1-benzoxazin-4-one in high yield. With 1 mol. of benzoyl chloride, however, a mixture of benzoxazinone and N-benzoylanthranilic acid was obtained. The mechanism of the reaction has been investigated and various 2-substituted-4H-3,1-benzoxazin-4-ones have been prepared and their u.v. spectra recorded.Keywords
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