Synthese substituierter 1,2,3-Benzotriazin-4(3H)-on-N 2-oxide und heteroanellierter 1,2,3-Triazin-4(3H)-on-N 2-oxide

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.