53464-31-6Relevant articles and documents
Mechanism of Diazo Coupling Reactions. Part XXXII. The Diazoamino Rearrangement in 20percent Acetonitrile/Aqueous Buffers
Kelly, Richard P.,Penton, John R.,Zollinger, Heinrich
, p. 122 - 132 (1982)
The rearrangements of 4'-methoxy-N-methyl- and N-methyl-4'-nitro-diazoaminobenzene have been studied in 20percent acetonitrile/aqueous buffers.The reactions are specifically acid catalyzed and involve pre-equilibrium formation of amine and diazonium salt
The in situ generation and reactive quench of diazonium compounds in the synthesis of azo compounds in microreactors
Akwi, Faith M.,Watts, Paul
, p. 1987 - 2004 (2016/10/05)
In this paper, a micro-fluidic optimized process for the continuous flow synthesis of azo compounds is presented. The continuous flow synthesis of Sudan II azo dye was used as a model reaction for the study. At found optimal azo coupling reaction temperature and pH an investigation of the optimum flow rates of the reactants for the diazotization and azo coupling reactions in Little Things Factory-MS microreactors was performed. A conversion of 98% was achieved in approximately 2.4 minutes and a small library of azo compounds was thus generated under these reaction conditions from couplers with aminated or hydroxylated aromatic systems. The scaled up synthesis of these compounds in PTFE tubing (i.d. 1.5 mm) was also investigated, where good reaction conversions ranging between 66-91% were attained.
MECHANISM OF AZO COUPLING. III. ROLE OF CROWN ETHER IN AZO COUPLING
Stovpovoi, P. A.,Bagal, I. L.,El'tsov, A. V.
, p. 895 - 900 (2007/10/02)
The equilibrium constants for complexation of a diazonium cation with a crown ether, as determined from kinetic data on azo coupling with aromatic amines, increase with decreasing polarity of the solvent, indicating a predominant contribution of electrost
KINETICS OF ACID CATALYZED DECOMPOSITION OF SUBSTITUTED 1,3-DIPHENYL-3-METHYLTRIAZENES
Svoboda, Petr,Pytela, Oldrich,Vecera, Miroslav
, p. 553 - 563 (2007/10/02)
Kinetics of the acid catalyzed decomposition of fifteen 1-substituted-1,3-diphenyl-3-methyltriazenes have been studied in 40percent aqueous ethanolic buffers at 25 deg C.The slope found for the dependence logkobs vs pH of the buffer is not equa