Catalytic hydrodefluorinations of organofluorine compounds by low-valentniobium catalyst were developed. In the presence of niobium(V) chloride (typically, 5 mol%), fluorobenzenes, α,α,α-trifluorotoluenes and (trifluoromethyl)pyridines were hydrodefluorinated with lithium aluminum hydride to give the corresponding benzenes, toluenes and methylpyridines in good yields, respectively.
An efficient room-temperature Pd-catalyzed Suzuki–Miyaura cross-coupling reaction of aryl-boronic acids with aryl chlorides is communicated here. The Pd(OAc)2/NiXantphos catalyst system enables the coupling reaction at room temperature in good to excellent yields (average yield >90%).
New, efficient electroluminescent materials based on organometallic Ir complexes
作者:Vladimir V. Grushin、Norman Herron、Daniel D. LeCloux、William J. Marshall、Viacheslav A. Petrov、Ying Wang
DOI:10.1039/b103490c
日期:——
Reaction of IrCl3 with fluorinated 2-arylpyridines in the presence of AgO2CCF3 affords fac-tris-cyclometalated arylpyridine Ir complexes exhibiting excellent processing and electroluminescent properties which can be fine-tuned via systematic control of the nature and position of the substituents on the aromatic rings.
IrCl3 与氟化 2-芳基吡啶在 AgO2CCF3 存在下的反应得到了 fac-tris-环金属化芳基吡啶 Ir 配合物,该配合物表现出优异的加工和电致发光特性,可以通过系统控制芳环上取代基的性质和位置来进行微调。
The present invention relates to the field of organic synthesis and more specifically to the isomerization of the β position of a β−trisubstituted C3-C70 carbonyl compound.