The Synthesis of Substituted 1,2,3-Benzotriazin-4(3H)-one N2-Oxides and Heteroannulated 1,2,3-Triazin-4(3H)-one N2-Oxides

Article abstract of DOI:10.1055/s-1988-27622

Under certain nitration conditions, o-amino aromatic nitriles can be ring closed to the 1,2,3-benzotriazin-4(3H)-one N²-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.