合成了一系列的单阴离子,双齿的2-苯胺基甲基吡啶配体,并用于制备双(螯合物)Zr(IV)和Hf(IV)双(二甲基酰胺基)配合物。通过NMR光谱和元素分析对所有配合物进行表征。配合物的溶液结构或多或少是流动性的,这取决于配体上的取代基。测试了配合物与不同的活化剂一起作为乙烯和丙烯聚合的催化剂。使用Al i Bu 2 H –甲基铝氧烷作为助催化剂可产生出具有高活性的高分子量聚乙烯的催化剂,但仅产生立体不规则和区域规则性较差的聚丙烯。
Copper-catalyzed benzylic oxidation of C(sp3)–H bonds
作者:Bo Zhang、Shou-Fei Zhu、Qi-Lin Zhou
DOI:10.1016/j.tet.2012.12.046
日期:2013.2
A selective oxidation of benzylic C(sp3)–H bonds to C(sp3)–O bonds catalyzed by copper complexes of quinoline–imine ligands was developed with peresters as oxidants under mild reaction conditions, which converted benzylic methylenes directly into benzylic alcohols and esters by means of direct C–H bond functionalization.
Group 4 metal bis(chelate) complexes of 2-anilidomethylpyridine ligands: Synthesis and catalytic activity for olefin polymerization
作者:Liana Annunziata、Gang Li、Claudio Pellecchia
DOI:10.1016/j.molcata.2011.01.004
日期:2011.3
ligands were synthesized and used to prepare bis(chelate) Zr(IV) and Hf(IV) bis(dimethylamido) complexes. All complexes were characterized by NMR spectroscopy and elemental analysis. The solution structures of the complexes were more or less fluxional, depending on the substituent on the ligands. The complexes were tested as catalysts for the polymerization of ethylene and propene, in combination with different
合成了一系列的单阴离子,双齿的2-苯胺基甲基吡啶配体,并用于制备双(螯合物)Zr(IV)和Hf(IV)双(二甲基酰胺基)配合物。通过NMR光谱和元素分析对所有配合物进行表征。配合物的溶液结构或多或少是流动性的,这取决于配体上的取代基。测试了配合物与不同的活化剂一起作为乙烯和丙烯聚合的催化剂。使用Al i Bu 2 H –甲基铝氧烷作为助催化剂可产生出具有高活性的高分子量聚乙烯的催化剂,但仅产生立体不规则和区域规则性较差的聚丙烯。
Three-coordinate Pt(O) η2-complexes: electrophilic hydrogen attack through oxidative-addition of protic acids
作者:Vincenzo De Felice、Augusto De Renzi、Francesco Ruffo、Diego Tesauro
DOI:10.1016/0020-1693(94)03824-4
日期:1994.5
Abstract Different types of products can be obtained by addition of proticacids HX (X=Cl, BF 4 ) to Pt(O) species of general formula [Pt(ol)(N-N)] (ol=olefin; N-N=N,N-chelate) according to the features of the two coordinated ligands. The typical attainment of four-coordinate hydrocarbyl derivatives by insertion of the alkene into the Pt-H bond is compared with the recently reported isolation of stable
摘要将质子酸HX(X = Cl,BF 4)加入通式[Pt(ol)(NN)]的Pt(O)物种中可获得不同类型的产品(ol =烯烃; NN = N,N -螯合物)根据两个配体的特征。通过将烯烃插入Pt-H键中,典型地获得四配位烃基衍生物与最近报道的稳定的五配位氢化物的分离进行了比较。最终产物的性质也与X基团的配位能力有关。提出了添加过程的一般机制。
Copper(II) complexes with Schiff base ligands. Synthesis of some copper(II) complexes with ligands derived from the reaction of pyridine-2-carboxaldehydes and aromatic amines
作者:David W. Johnson、Helen K. Mayer、Joletta P. Minard、Jocelyn Banaticla、Charles Miller
DOI:10.1016/s0020-1693(00)86281-7
日期:1988.4
Abstract A series of copper(II) complexes with ligands derivedfrom the Schiff base reaction of pyridine- 2-carboxaldehyde or 6-methylpyridine-2-carboxal- dehyde with aniline, benzylamine or 2-phenylethylamine has been prepared. These complexes have been characterized by spectroscopic methods. The electronic spectrum of bis( N -phenyl-(6-methyl-2- pyridyl)methylimine) copper(II) tetrafluoroborate has
Design and synthesis of noncompetitive metabotropic glutamate receptor subtype 5 antagonists
作者:Santosh S. Kulkarni、Barbara Nightingale、Christina M. Dersch、Richard B. Rothman、Amy Hauck Newman
DOI:10.1016/j.bmcl.2006.04.032
日期:2006.7
A series of diaryl amides was designed and synthesized as novel nonethynyl mGluR5 antagonists. The systematic variation of the pharmacophoric groups led to the identification of a lead compound that demonstrated micromolar affinity for the mGluR5. Further optimization resulted in compounds with improved binding affinities and antagonist profiles, in vitro. (c) 2006 Elsevier Ltd. All rights reserved.