Metal–Halogen Exchange between Hydrazine Polyanions and α,α′-Dibromo-<i>o</i>-xylene
作者:Oleg Lebedev、Uno Mäeorg
DOI:10.1021/om4009394
日期:2014.1.13
Aromatic-bridged bis(hydrazines) were found to be the main products in the reaction of hydrazine polyanions with α,α′-dibromo-o-xylene. It was confirmed that the reaction is driven by a metal–halogen exchange process. A three-step reaction mechanism is suggested.
Highly selective arylation of disubstituted hydrazines by pentavalent organobismuth reagents
作者:Olga Tšubrik、Uno Mäeorg、Ulf Ragnarsson
DOI:10.1016/s0040-4039(02)01327-8
日期:2002.8
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.