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Synthesis of Benzoxazinone Derivatives: A New Route to 2 (N Phthaloylmethyl)-4H-3,1-benzoxazin-4-one

Author(s): Mehdi Shariat | Sohrab Abdollahi

Journal: Molecules ISSN 1420-3049
Volume: 9; Issue: 8; Start page: 705; Date: 2004;
Original page

Keywords: Benzoxazinone | Quinazolones | Cyanuric acid

ABSTRACT
A new method has been designed to prepare the known benzoxazinone derivative 2-(N-phthaloylmethyl)-4H-3,1-benzoxazin-4-one (4). The acyl chloride derivative N-phthaloylglycine reacts with anthranilic acid in chloroform, in the presence of triethylamine, to give an intermediate that is then reacted with cyanuric chloride, used as a cyclization agent, to produce the benzoxazinone derivative.