REACTIVITY AND MECHANISM OF ANTITUMOR ACTION OF TRIAZENES IV. INTERACTION OF AROMATIC DIAZO-DERIVATIVES WITH L-AMINO ACIDS
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Nifontov, V. I.,Bel'skaya, N. P.,Chernov, V. A.,Ershova, Yu. A.,Basalaeva, E. M.,et al.
p. 497 - 500
(2007/10/02)
Possibility of the Intarmolecularity of Triazene Rearrangement
The mechanism for the ortho-rearrangement of diaryltriazenes still remains equivocal.An interesting result suggesting an intramolecular nature of the triazene rearrangement was obtained on the basis of the effect of concentration of added N,N-dimethylaniline in the ortho-rearrangement of 1,3-bis(4-methylphenyl)triazene (1).The ortho/para ratio for the rearrangement of 1,3-diphenyltriazene (4) tends to increase with an increase of the viscosity.The results are discussed on the basis of increasing nucleophilicity of free amine by H-bonding with dimethylaniline and favoring ortho-migratrion with viscosity, respectively.
Ogata, Yoshiro,Nakagawa, Yoshiaki,Inaishi, Morio
p. 2853 - 2854
(2007/10/02)
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