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Synthesis 1988; 1988(7): 517-520
DOI: 10.1055/s-1988-27622
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Synthese substituierter 1,2,3-Benzotriazin-4(3H)-on-N 2-oxide und heteroanellierter 1,2,3-Triazin-4(3H)-on-N 2-oxide

Alfred Mitschker* , Karlfried Wedemeyer
  • *BAYER AG, GB OC-Forschung/Lewatit, 5090 Leverkusen, Federal Republic of Germany
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Publication Date:
18 September 2002 (online)

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The Synthesis of Substituted 1,2,3-Benzotriazin-4(3H)-one N 2-Oxides and Heteroannulated 1,2,3-Triazin-4(3H)-one ,N 2-oxides Under certain nitration conditions, o-amino aromatic nitriles can be ring closed to the 1,2,3-benzotriazin-4(3H)-one N 2-oxides via intermediate nitramines. o-Amino heteroaromatic nitriles give the corresponding heteroannulated 1,2,3-triazin-4 (3H)-one N2-oxides. The scope of this new ring-closure reaction is discussed.