Copper(II)-Mediated Dehydrogenative Cross-Coupling of Heteroarenes
作者:Zhifeng Mao、Zhe Wang、Zhaoqing Xu、Fei Huang、Zhengkun Yu、Rui Wang
DOI:10.1021/ol301517y
日期:2012.8.3
Cu(OAc)(2)-mediated dehydrogenative cross-coupling between two heteroarenes has been realized in the absence of any other additive. A mechanism involving a formal Cu(II) to Cu(0) route by convergent disproportionation of the copper mediator is proposed and has been evidenced by copper mirror formation during the reaction. This synthetic protocol provides a concise and "green" access to unsymmetrical biheteroarenes bearing structural motifs of substantial utility in organic synthesis.
FLUORINATED POLYMER DOTS
申请人:University of Washington through its Center for
Commercialization
公开号:EP3019853B1
公开(公告)日:2022-01-19
ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES
申请人:Universal Display Corporation
公开号:US20210095196A1
公开(公告)日:2021-04-01
Provided are compounds including a ligand L
A
of
that are useful as emitters in OLEDs, where at least one of R
A
and R
B
is
Palladium-Catalyzed Dehydrogenative Cross-Couplings of Benzazoles with Azoles
作者:Wei Han、Peter Mayer、Armin R. Ofial
DOI:10.1002/anie.201006208
日期:2011.2.25
Different enough: Palladium‐catalyzed cross‐couplings of benzazoles with imidazoles, oxazoles, and thiazoles furnish unsymmetrical 2,2′‐bisheteroaryls in high yield (see scheme). These oxidative CC bond formations use the selective cleavage of the CH bond at C2 in the two coupling partners and are robust enough to be conducted under normal air atmosphere.