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Please login to access the full content or check if you have access via Method 8: From 1,2,3-Benzotriazin-4(3H)-ones

DOI: 10.1055/sos-SD-016-00745

Kikelj, D.Science of Synthesis, (200416664.

3-(Arylideneamino)-1,2,3-benzotriazin-4(3H)-ones undergo thermal decomposition on heating in an inert medium to give the isomeric 2-arylquinazolin-4(3H)-ones in preparative yields (Scheme 132).[‌630‌] The reaction of 1,2,3-benzotriazin-4(3H)-one with formamide at 200°C affords quinazolin-4(3H)-one, whereas quinazoline-2,4(1H,3H)-dione is obtained with urea.[‌631‌]

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