Solid-supported cross-coupling catalysts derived from homogeneous nickel and palladium coordination complexesElectronic supplementary information (ESI) available: Synthesis of the complexes and crystallographic data for 1 and 2. See http://www.rsc.org/suppdata/dt/b3/b316553c/
作者:Nam T. S. Phan、David H. Brown、Harry Adams、Sharon E. Spey、Peter Styring
DOI:10.1039/b316553c
日期:——
Solid-supported catalysts derived from homogeneous nickel(II) and palladium(II) non-symmetrical salen-type coordination complexes have been prepared and shown to be effective in the heterogeneous catalysis of carbon–carbon cross-coupling reactions. The nickel catalyst has been used in room-temperature Tamao–Kumada–Corriu reactions and the palladium catalyst in the Heck reaction at elevated temperatures. The complexes were prepared by improved methods and characterised by spectroscopic techniques. Comparisons between the solid-supported catalysts and their homogeneous analogues are reported. The single-crystal structure determination of the nickel and palladium complexes [M(salenac-OH)]
[M = Ni, Pd; salenac-OH = 9-(2′,4′-dihydroxyphenyl)-5,8-diaza-4-methylnona-2,4,8-trienato](2−)] is reported.
Oxidation of Cu<sup>II</sup> to Cu<sup>III</sup>, Free Radical Production, and DNA Cleavage by Hydroxy-salen−Copper Complexes. Isomeric Effects Studied by ESR and Electrochemistry
ne)ethylenediamine (hydroxy-salens) have been synthesized. The hydroxy group in the ortho, meta, or para position on each salicylidene unit was added to reinforce the stability of the copper complex and to create a hydroquinone system cooperating with the copper redox system to facilitate the spontaneous formation of oxidizing CuIII species. Cyclic voltammetry and ESR spectroscopy in combination with
describes the synthesis of a new coordination polymer prepared through the polycondensation reaction of α,ω-bis(chloromethyl)-polymethylphenylsilane with the Ni(II) complex of bis(salicylidene)ethylenediamine (salen). For this purpose, a new preparation method of the chloromethylated polysilane was presented along with the synthesis and characterisation of the polymer–metal complex. IR, 1H-NMR and
Process for the preparation of manganese complexes of salen compounds
申请人:——
公开号:US20030100763A1
公开(公告)日:2003-05-29
A process for the preparation of manganese complexes of salen compounds which comprises carrying out the reaction of a salen compound with a manganese compound in DMF is described. In a preferred embodiment, the salen compound itself is synthesised likewise in DMF and reacted without intermediate isolation to form the manganese complex.