Rhodium(II) carboxylates are privileged catalysts for the most challenging carbene-, nitrene-, and oxo-transfer reactions. In this work, we address the strategic challenges of current organic and inorganic synthesis methods to access these rhodium(II) complexes through an oxidative rearrangement strategy and a reductive ligation reaction. These studies illustrate the multiple benefits of oxidative
Carbapenem compounds of formulae
wherein R₁ is a lower alkyl, R₂ is hydrogen or a substituent other than amino are useful for the treatment of infections.
A method for preparing an &agr;-oxolactam comprising, reacting a corresponding &agr;-diazolactam with an oxygen donor, in the presence of a transition metal catalyst, to yield the corresponding &agr;-oxolactam.
Pentasubstituted Ferrocene and Dirhodium(II) Tetracarboxylate as Building Blocks for Discrete Fullerene-Like and Extended Supramolecular Structures
作者:Lok H. Tong、Laure Guénée、Alan F. Williams
DOI:10.1021/ic1021565
日期:2011.3.21
two-dimensional polymeric structure determined by X-ray crystallography. The dirhodium linkers link ferrocenyl units by coordination to the pyrazoles but only four of the five pyrazole moieties of the pentapyrazole ligand are coordinated. The ligand-to-linker ratio of 1:2 in 6 was confirmed by 1H NMR spectroscopy and elemental analyis, while results from IR and Raman are in agreement with the diaxially
五(1-甲基吡唑)二茂铁基膦氧化物配体(1)[Fe(C 5(C 3 H 2 N 2 CH 3)5)(C 5 H 4 PO(t- C 4 H 9)2)的合成连同其X射线晶体结构一起被报道。其自组装行为与二铑(II)四辛酸接头(2)的[Rh 2(O 2 CC 7 ħ 15)4 ]研究了施工的类富勒烯的组合物组件[(配体)12(链接器)30 ]。乙腈中1和2之间的反应导致形成浅紫色沉淀物(3)。富勒烯样结构[Fe(C 5(C 3 H 2 N 2 CH 3)5)(C 5 H 4 PO(t- C 4 H 9))2)] 12 [Rh 2(O 2 CC 7 H 15)4 ]由1 H NMR和元素分析获得30。IR和拉曼研究通过比较羧酸盐基团和铑-铑键的伸展频率与模型化合物(5)[Rh 2(O 2 CC 7 H 15)4 ](C 3 H 3 N 2 CH 3)2,连接子2的双加合物与1-甲基吡唑。X射线粉