Palladium-Catalyzed Coupling of Polyfluorinated Arenes with Heteroarenes via C–F/C–H Activation
摘要:
The first palladium-catalyzed coupling of 2-pyrldyl-polyfluoroarenes and benzoxazole, thiazole, benzothiazole, benzoimidazole, oxazole or oxadiazole via a concurrent C-F/C-H activation is described. Initial mechanistic studies showed that C-F activation of perfluoroarene is likely the rate-limiting step of the catalytic cycle. This protocol provides a useful and operationally simple process to functionalized polyfluoroarenes.
Luminescent organometallic compound and light emitting device
申请人:——
公开号:US20030040627A1
公开(公告)日:2003-02-27
A luminescent organometallic compound having the chemical structure represented by the general formula (1) or (2):
1
[in the general formulas (1) and (2), A and B represent ring structures, M represents a metallic atom, X represents a hetero atom other than carbon and hydrogen, Y represents at least one electron-attracting group connecting to ring structure B, Lb represents a unidentate or multidentate ligand, and p, q and r represent positive integers.]
具有通式(1)或(2)所代表的化学结构的发光有机金属化合物:
1
[在通式(1)和(2)中,A 和 B 代表环结构,M 代表金属原子,X 代表除碳和氢以外的杂原子,Y 代表至少一个与环结构 B 相连的引电子基团,Lb 代表非同位或多同位配体,p、q 和 r 代表正整数;
AbstractAn effective and facile method for preparation of partially fluorinated aromatics via Nickel catalyzed, chelation‐assisted ortho selective hydrodefluorination of polyfluoroarnes with triethylsilane has been developed, in which N‐containing heterocycles were used as directing groups. The advantage of this protocol is its simple catalytic system with use of inexpensive and readily available NiCl2·6H2O as a catalyst.
US7067202B2
申请人:——
公开号:US7067202B2
公开(公告)日:2006-06-27
Palladium-Catalyzed Coupling of Polyfluorinated Arenes with Heteroarenes via C–F/C–H Activation
作者:Daohong Yu、Long Lu、Qilong Shen
DOI:10.1021/ol303567t
日期:2013.2.15
The first palladium-catalyzed coupling of 2-pyrldyl-polyfluoroarenes and benzoxazole, thiazole, benzothiazole, benzoimidazole, oxazole or oxadiazole via a concurrent C-F/C-H activation is described. Initial mechanistic studies showed that C-F activation of perfluoroarene is likely the rate-limiting step of the catalytic cycle. This protocol provides a useful and operationally simple process to functionalized polyfluoroarenes.