Highly Efficient Construction of Benzene Ring in Carbazoles by Palladium-Catalyzed <i>endo</i>-Mode Oxidative Cyclization of 3-(3‘-Alkenyl)indoles
作者:Aidi Kong、Xiuling Han、Xiyan Lu
DOI:10.1021/ol060039u
日期:2006.3.1
[reaction: see text] A highly efficient construction of the benzene ring in carbazoles by palladium-catalyzed endo-mode oxidative cyclization of 3-(3'-alkenyl)indoles was developed. The reaction utilizes benzoquinone as the stoichiometric oxidant and is conducted under mild conditions.
Low-temperature Photolysis of<i>ortho</i>-Substituted Azidobiphenyls. Formation of Phenazines from 2,2′-Diazidobiphenyls
作者:Akira Yabe
DOI:10.1246/bcsj.53.2933
日期:1980.10
in a rigid matrix. The phenazine formation results from the 1,1′-C–C bond fission of the biphenyl nucleus and suggests the aziridine intermediates. The low-temperature photolysis of 2-azido-2′-methylbiphenyl and 2-azido-2′,4′,6′-trimethylbiphenyl leads to the triplet-derived phenanthridine derivatives as major products.