Evonik Degussa Gmbh

Mathias Enders

Robert Franke

Dirk Fridag

Katrin Marie Dyballa

Siegfried R Waldvogel

Bernd Elsler

Novel 2,2'-diaminobiaryls having two secondary amines and an electrochemical process for preparation thereof.

2,2'-diaminobiaryls having two secondary amines

An electrochemical treatment of differently protected aniline or napthylamine results in the preparation of unsymmetrical 2, 2'-diaminebiaryls provided with different protecting groups. The treatment involves the protecting groups prior to the C, C coupling step. The co-reactants generally have different oxidation potentials which results from the selection of the protecting groups. The treatment also enables controlled access to the individual amino functions of the 2, 2&#x2032;-diaminobiaryls by subsequent selective deprotection.

2,2'-diaminobiaryls having a phthaloyl group or succinoyl group

Novel 2,2'-diaminobiaryls having one primary and one secondary amine and an electrochemical process for preparation thereof.

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Hackenheim, Germany

Mathias Enders