Nucleophilic Substitutions and Radical Reactions of Phenylazocarboxylates
作者:Hannelore Jasch、Sarah B. Höfling、Markus R. Heinrich
DOI:10.1021/jo202406k
日期:2012.2.3
Nucleophilic substitutions of the benzene ring proceed with aromatic amines and alcohols under mild conditions. The attack of aliphatic amines may be directed to the aromatic core as well as to the carbonyl unit leading to azocarboxamides. The benzene ring can further be modified through radicalreactions, in which the tert-butyloxycarbonylazo group enables the generation of aryl radicals at either elevated
Manganese(IV)‐Mediated Hydroperoxyarylation of Alkenes with Aryl Hydrazines and Dioxygen from Air
作者:Stephanie Kindt、Hannelore Jasch、Markus R. Heinrich
DOI:10.1002/chem.201400064
日期:2014.5.19
version of the Meerweinarylation in which the introduction of oxygen is achieved by using dioxygen from the air. In this way, hydroperoxides were obtained from activated as well as non‐activated alkenes by oxidizing aryl hydrazines with manganese dioxide. The best results were obtained with α‐substituted acrylates. Importantly, the aryl hydrazine has to be added slowly to the reaction mixture to allow