Ueber die Einwirkung von Säurechloriden auf Nitrophenylnitrosaminnatrium

Abstract

R u h e m a n n und M o r r e l l befolgten Grundsatz miisste beispielsweise aoch die innere, Condensation des Phenylhydrazids des Aethoxgmethylen-Acetess~ithers in folgender Weise formulirt werden :h. man miisste annehmen, dass neben den Derivaten des gewiihnlioben (1) Phenylpyrazols auch solche existiren, welche sich von einem isomeren (1) Phenylpyrazol ableiten. Diese Frage ist sowohl von K n o r r ' ) wie von dem Einen von uns2) experimentell gepriift worden, aber mit entschieden negativem Ergebniss. Auch aus dem obigen

Time-of-Flight Secondary Ion Mass Spectroscopy Characterization of the Covalent Bonding between a Carbon Surface and Aryl Groups

“…The transfer of a second electron to another diazonium salt would lead to the formation of dinitrogen and a new radical, which would attack the first grafted nitrophenyl group to give a cyclohexadienyl radical along reaction R3 (Scheme ). This reaction is the well-known S H homolytic substitution − (the Gomberg reaction , ) which gives dimers and quadrimers by attack of an arene by an aryl radical. The rate constant for the reaction of the nitrophenyl radical on nitrophenyl is close to the rate constant for the reaction of the phenyl radical on benzene .…”

Homolytic Aromatic Arylation

“…2. Diazonium hydroxides and acylarylnitrosamines (a) Gomberg reaction, G reaction The decomposition of diazohydroxides (7) in aqueous/aromatic systems was developed by Gomberg (133,134) from the work of Bamberger (9,10) and Kuhling (207)(208)(209). In aqueous solution at temperatures of 0-5°C.…”