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- W1978749946 abstract "A series of 3-substituted-3,4-dihydro-4-imino-1,2,3-benzotriazines (V) have been prepared by cyclization of the appropriate o-cyanophenyltriazenes (IV) in 70% aqueous ethanol or in ethanol containing 2% piperidine. Triazenes with powerful electron-withdrawing substituents cyclize directly to substituted 4-anilino-1,2,3-benzotriazines (VI). Rearrangement of 3-aryl-3,4-dihydro-4-imino-1,2,3-benzotriazines to the isomeric 4-anilino-1,2,3-benzotriazines has been effected in ethanol or in 2N-hydrochloric acid and is facilitated by electron-withdrawing substituents in the aryl nucleus. The contrasting stabilities of 3-benzyl- and 3-phenethyl-3,4-dihydro-4-imino-1,2,3-benzotriazine have been attributed to a steric affect." @default.
- W1978749946 created "2016-06-24" @default.
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- W1978749946 date "1970-01-01" @default.
- W1978749946 modified "2023-09-23" @default.
- W1978749946 title "Triazines and related products. Part III. Synthesis and rearrangement of 3,4-dihydro-4-imino-1,2,3-benzotriazines" @default.
- W1978749946 doi "https://doi.org/10.1039/j39700000765" @default.
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