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Synthesis 1989; 1989(3): 211-212
DOI: 10.1055/s-1989-27203
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A Convenient Synthesis of 2,4-Dihydroxy-2H-1,4-benzoxazin-3(4H)-one

Dieter Sicker* , Birgitt Prätorius, Gerhard Mann, Lutz Meyer
  • *Sektion Chemie der Karl-Marx-Universität Leipzig Talstr. 35, DDR-7010 Leipzig, German Democratic Republic
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Publication Date:
17 September 2002 (online)

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A convenient four step procedure for the synthesis of 2,4-dihydroxy-2H-1.4-benzoxazin-3(4H)-one (6), a bioactive natural product from Gramineae, is described that avoids disadvantages of hitherto existing methods and affords 6 in 60% overall yield.