Olga Tsubrik

Highly selective arylation of disubstituted hydrazines by pentavalent organobismuth reagents

Abstract The scope of a set of recently reported hydrazine reagents has been explored with respect to arylation. Compounds of type R1NHNHCOR2 can be selectively arylated under very mild conditions using triarylbismuth diacetates.

Investigation of the oxidation ability of protected hydrazine derivatives

In the present paper we have determined the oxidation potentials for several protected hydrazine derivatives using cyclic voltammetry. For comparison the chemical oxidation of these hydrazines was also studied.

Mischmetall and Zn-Cu couple as efficient reagents for the pinacol coupling of aldimines

The reductive pinacol coupling of aldimines was studied in respect to different coupling-mediators such as mischmetall, Zn–Cu couple and Devarda alloy. High diastereoselectivity was achieved for three substrates. A simple procedure for the preparation of 1,2-diamines is described.