PhI(OCOCF<sub>3</sub>)<sub>2</sub>-mediated ruthenium catalyzed highly site-selective direct ortho-C–H monoarylation of 2-phenylpyridine and 1-phenyl-1H-pyrazole and their derivatives by arylboronic acids
Direct ortho C–H monoarylation of 2-phenylpyridine and 1-phenyl-1H-pyrazole and its derivatives via a Ru catalysed reaction using catalytic amount of Phl(OCOCF3)2 as a hyper-valent iodine oxidant with arylboronic acids is presented.
versatile tool for the construction of (hetero)biaryl scaffolds. However, the cross-electrophile coupling using abundant (hetero)arylhalides and pseudohalides is still in its infancy. In particular, a robust and general method for the cross-electrophile coupling would allow unparalleled entry into the vast collection of commercially available, structurally diverse (hetero)arylhalides and pseudohalides
An organic light-emitting device includes: a first electrode; a second electrode; and an organic layer between the first electrode and the second electrode, the organic layer including an emission layer, wherein the emission layer includes a first host and a dopant, the first host is represented by one selected from Formulae 1 and 2, and the dopant is represented by Formula 7:
Ar
11
(L
11
)
a11
-(R
11
)
b11
]
n11
Formula 1
Ar
21
(L
21
)
a21
-(R
21
)
b21
]
n21
Formula 2
M(L
1
)
n71
(L
2
)
n72
. Formula 7
The organic light-emitting device may have high efficiency and long lifespan and may show little change in the efficiency at an x-coordinate (CIEx) value of 0.21.