合成了具有不对称的2-(苯并咪唑-2-基)-6-(苯并三唑-1-基)吡啶配体的空气和水分稳定的钌(II)配合物,并通过NMR分析和X射线晶体学测定对其结构进行了表征。这些配合物在2-丙醇回流中的酮转移氢化中表现出出色的催化活性,最终TOFs高达176400 h –1。分离出相应的RuH配合物,并通过受控实验将其提议为催化活性物质。Ru(II)络合物催化剂的高催化活性归因于络合物中中心金属原子周围的半不稳定不对称配位环境,以及配体中存在可转换的苯并咪唑基NH官能团。
Metal-free site-selective C–N bond-forming reaction of polyhalogenated pyridines and pyrimidines
作者:Lei Wang、Ning Liu、Bin Dai
DOI:10.1039/c5ra18653f
日期:——
of the pyridine ring to generate monosubstituted halogenated pyridines with high selectivities. Different halogen atoms at various positions were produced by the pyridine ring that performed well under mild conditions. Halogenated pyrimidines underwent highly selective coupling at the chloride group with a wide range of amines having broad substrate applicability and moderate to good yields. The selectivity
Ruthenium NNN complexes with a 2‐hydroxypyridylmethylene fragment for transfer hydrogenation of ketones
作者:Jing Shi、Shu Shang、Bowen Hu、Dafa Chen
DOI:10.1002/aoc.4100
日期:2018.2
[Ru(L1)2][PF6]2 (3) and [Ru(L3)2][PF6]2 (4), respectively. Complex 1 reacted with CO to afford product [Ru(L2)(PPh3)(CO)Cl][Cl]. The catalytic activity for transferhydrogenation of ketones was investigated. Complex 1 showed the highest activity, with a turnover frequency value of 1.44 × 103 h−1 for acetophenone, while complexes 3 and 4 were not active.
合成了四个含有2-甲氧基吡啶基亚甲基或2-羟基吡啶基亚甲基片段的NNN三齿配体L 1 -L 4,并将其引入钌中心。当(HOC 5 H 3 NCH 2 C 5 H 3 NC 5 H 7 N 2)(L 2)和(HOC 5 H 3 NCH 2 C 5 H 3 NC 6 H 6 N 3)(L 4)与RuCl 2反应(PPh 3)3,分别分离出两个氯化钌产物Ru(L 2)(PPh 3)Cl 2(1)和Ru(L 4)(PPh 3)Cl 2(2)。(MeOC 5 H 3 NCH 2 C 5 H 3 NC 5 H 7 N 2)(L 1)和(MeOC 5 H 3 NCH 2 C 5 H 3 NC 6 H 6 N 3)(L 3)的反应)在NH 4 PF 6存在下,用RuCl 2(PPh 3)3生成两个阳离子型络合物[Ru(L 1)2 ] [PF 6 ] 2(3)和[Ru(L 3)2 ] [PF 6 ]分别为2
Unsymmetrical indazolyl-pyridinyl-triazole ligand-promoted highly active iridium complexes supported on hydrotalcite and its catalytic application in water
作者:Chenyang Ge、Xinxin Sang、Wei Yao、Liang Zhang、Dawei Wang
DOI:10.1039/c7gc02892j
日期:——
indazolyl-pyridinyl-triazole ligand was synthesized and its iridium complex supported on hydrotalcite was characterized via X-ray power diffraction (XRD), X-ray photoelectron spectroscopy (XPS), energy dispersive X-ray (EDX) spectroscopy and transmission electron microscopy (TEM). This new heterogeneous catalyst bearing the unsymmetrical indazolyl-pyridinyl-triazole ligand exhibits high catalytic activity
Selective C-N Bond-Forming Reaction of 2,6-Dibromopyridine with Amines
作者:Lei Wang、Ning Liu、Bin Dai、Hengcai Hu
DOI:10.1002/ejoc.201402619
日期:2014.10
A practical and efficient protocol for the syntheses of 6-substituted 2-bromopyridine compounds has been developed by using a selective copper-catalyzedC–N bond-forming reaction between 2,6-dibromopyridine and a range of amines. The major advantage of this protocol is the complete control of selectivity of the pyridine bromine atom for the C–N cross-coupling reaction. There are few reported syntheses
[EN] PYRAZOLOPYRIDINE KINASE INHIBITORS<br/>[FR] INHIBITEURS DE LA PYRAZOLOPYRIDINE KINASE
申请人:VERTEX PHARMA
公开号:WO2010011756A1
公开(公告)日:2010-01-28
The present invention relates to compounds of the following formulae, which are useful as inhibitors of protein kinase. The invention also provides pharmaceutically acceptable compositions comprising said compounds and methods of using the compositions in the treatment of various disease, conditions, or disorders. The invention also provides processes for preparing compounds of the inventions.