681815-36-1Relevant academic research and scientific papers
Synthesis of Novel 1,3,5-Tris(arylazo)benzenes via Pd-Catalyzed Couplings and Cu(I)-Mediated Direct Oxidations
Lim, Young-Kwan,Choi, Sunju,Park, Kyung Bae,Cho, Cheon-Gyu
, p. 2603 - 2606 (2004)
A series of novel 1,3,5-tris-azobenzenes were prepared from 1,3,5-trihalobenzene via Pd-catalyzed couplings of N-Boc aryl hydrazines and subsequent Cu(I)-mediated direct oxidations. The oxidation of tris-arylhydrazide provided the azobenzene as a mixture
Regioselective [5,5]-sigmatropic rearrangement reactions of aryl hydrazides
Kang, Hong-Min,Lim, Young-Kwan,Shin, In-Jee,Kim, Hee-Yeon,Cho, Cheon-Gyu
, p. 2047 - 2050 (2007/10/03)
N,N′-Aryl hydrazides with substituents at the ortho or meta positions undergo highly regioselective [5,5]-sigmatropic rearrangement reactions to furnish benzidines in good to excellent isolated yields. The presence of single substituent at either the ortho or meta position provides sufficient bias, effectively suppressing the formation of diphenylene, the major byproduct of the conventional benzidine rearrangement reaction.
