C–H Arylation of Heterocyclic <i>N</i>-Oxides Through <i>in Situ</i> Diazotisation Of Anilines without Added Promoters: A Green And Selective Coupling Process
作者:Aymeric P. Colleville、Richard A. J. Horan、Sandrine Olazabal、Nicholas C. O. Tomkinson
DOI:10.1021/acs.oprd.6b00117
日期:2016.7.15
A green and selective method for the generation of biaryl compounds through C–H arylation of heterocyclicN-oxides, in which the addition of ascorbic acid as a promoter is not required for either the generation of an aryldiazonium species or the subsequent arylation, is presented. Reaction conditions were optimized through multivariate data analysis, including orthogonal projections to latent structures
1,3-Diaryltriazenes: a new class of anorectic agents
作者:David T. Hill、Kerry G. Stanley、Janice E. Karoglan Williams、Bernard Loev、Phillip J. Fowler、James P. McCafferty、Edward Macko、Charles E. Berkoff、Christine B. Ladd
DOI:10.1021/jm00360a015
日期:1983.6
A series of substituted 1,3-diaryltriazenes has been synthesized and tested for anorectic activity. Several members of the series were effective; one compound, 1,3-bis[2-cyano-5-(trifluoromethyl)phenyl]triazene, was particularly active, causing weight loss in rats, dogs, and squirrel monkeys. It was devoid of overt central nervous system activity, and compared to previously reported biologically active
A new reaction of aryl isocyanates with nitrite ion
作者:Nigel P. Botting、Brian C. Challis
DOI:10.1039/c39890001585
日期:——
Reaction of nitriteion with excess arylisocyanate in organic solvents at 0 °C rapidly produces 1,3-diaryltriazenes in good yields via an aryldiazotate ion intermediate reacting with a second molecule of the arylisocyanate.
Substituent Effects on the Thermal Cis-to-Trans Isomerization of 1,3-Diphenyltriazenes in Aqueous Solution
作者:Nan Chen、Mónica Barra、Ivan Lee、Navjot Chahal
DOI:10.1021/jo011094d
日期:2002.4.1
the electron-withdrawing character of the para substituent increases. In addition, the rate ascribed to the interconversion of neutral cis rotamers through hindered rotation around the nitrogen-nitrogen singlebond is found to decrease as the electron-withdrawing character of the para substituent increases. Rates of interconversion of neutral cis rotamers are also found to decrease with decreasing solvent