Ru(II)-Catalyzed Direct C(sp<sup>2</sup>)–H Activation/Selenylation of Arenes with Selenyl Chlorides
作者:Shiqi Shu、Zhoulong Fan、Qizheng Yao、Ao Zhang
DOI:10.1021/acs.joc.6b00634
日期:2016.7.1
A new ruthenium catalytic system was developed for the construction of a C(sp2)–Se bond with the assistance of directing groups. This protocol features mild reaction conditions, wider substrate scope, and convenient late-stage selenylation of bioactive molecules.
Rh(III)-Catalyzed Selenylation of Arenes with Selenenyl Chlorides/Diselenides via C–H Activation
作者:Songjie Yu、Boshun Wan、Xingwei Li
DOI:10.1021/ol503231p
日期:2015.1.2
Rh(III)-catalyzed, chelation-assisted C–Hactivation and selenylation of arenes has been achieved. Arenes bearing oxime, azo, pyridyl, and N-oxide chelating groups are viable substrates, and electrophilic selenyl chlorides and diselenides are used as selenylating reagents. The catalytic system is highly efficient under mild conditions over a broad range of substrates with excellent functional group
Palladium catalyzes the intermolecular chalcogenation of carbazole, 2-phenylpyridine, benzo[h]quinolone, and indole derivatives with disulfides and diselenides via selective C-H bond cleavage, providing a convenient route to thio and selenoethers.
Palladium(II)-catalyzed switchable mono-/diselenylation of arenes controlled by solvent effects
作者:Weiwei Jin、Poonnapa Zheng、Ga-Lai Law、Wing-Tak Wong
DOI:10.1016/j.jorganchem.2015.09.040
日期:2016.6
Organic selenides were efficient regioselective synthesized by palladium-catalyzed switchable mono- and diselenylation of arenes sp2 C–H bonds through simply tuning the DMSO to water ratio. The present protocol was also successfully extended to the monoselenylation of 2-phenoxypyridines, which bore a removable directing group, in modest yields.