Electrochemical arylation of cobalt chelates with diphenyliodonium salts occurs at low cathodic potentials (viz., potential of the first reduction wave of the diphenyliodonium salt) and affords the phenyl derivatives of Co-III chelates containing the sigma-Co-C(sp(2)) bond. Nickel complexes should be arylated at higher cathodic potentials because it is necessary to generate paramagnetic Ni-I complexes.
Synthesis, characterization, CV, and X-ray structures of aryl cobaloximes
作者:Kamlesh Kumar、B.D. Gupta
DOI:10.1016/j.jorganchem.2010.06.012
日期:2010.9
Aryl cobaloximes, ArCo(dioxime)2Py (1–9) (Ar = phenyl, 1-naphthyl, 2-naphthyl; dioxime = dmgH, dpgH, gH) have been synthesized and characterized primarily by NMR and elemental analyses and molecular structures of four complexes have also been determined crystallographically. The electronic and steric effects of the aryl ring size and the equatorial dioxime affect the NMR chemical shifts and the X-ray
The reaction of triphenylstannylcobaloxime with enynes under photochemical and thermal conditions
作者:Masaru Tada、Yoshinobu Hanaoka
DOI:10.1016/s0022-328x(00)00550-7
日期:2000.12
is a source of the triphenylstannyl radical and cobaloxime radical. The reaction pattern is different under photochemical and thermalconditions. Photochemical reaction gave the products formed by the addition of the triphenylstannyl radical to the acetylene group followed by the tandem addition of the intermediate vinyl radical to the intramolecular olefin. Thermal reaction gave triphenylstannyl-substitution