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Journals and Conferences
Neutral organocopper(III) complexes have been prepared from organocuprate(I) reagents and alkyl halides in the presence of certain strongly electron donating ligands.
The first pi-allyl complexes of CuIII have been prepared and characterized by using rapid injection nuclear magnetic resonance spectroscopy (RI-NMR). The prototype, (eta3-allyl)dimethylcopper(III), was prepared by injection of allyl chloride into a THF-d8 solution of iodo-Gilman reagent, Me2CuLi.LiI (A), spinning in the probe of an NMR spectrometer at -100… (More)
Lithium tetramethylcuprate(III), Me(4)CuLi, the Cu(III) analog of the Gilman reagent, has been prepared in high yield from halo-Gilman reagents Me(2)CuLi.LiX (X = Cl, Br, I) and 2,3-dichloropropene and found to have surprising thermal stability. The cyano-Gilman reagent (X = CN) follows a different pathway.
Under the conditions of a rapid injection experiment, the conjugate addition reactions of butyl Gilman reagents with 2-cyclohexenone undergo oscillations of a complex nature.
Rapid-injection is a very useful technique for the preparation of temperature-sensitive and air-sensitive compounds in the cold, nitrogen-filled probe of an NMR spectrometer. We have used this method to prepare solutions of pi-complexes from 2-cyclohexenone and prototypical cuprates Me2CuLi.LiI and Me2CuLi.LiCN, and we have assigned structures on the basis… (More)
The title compound, C(34)H(28)Si, was prepared as an inter-nal standard for diffusion-ordered NMR spectroscopy. The four ligands are arranged tetra-hedrally around the Si atom. The two naphthalene systems are nearly perpendicular, making an angle of 86.42 (4)° with one another. A naphthalene system and a phenyl ring are also nearly perpendicular, making an… (More)
Lithium tetramethylcuprate(III) 1 reacts readily at -100 degrees C with appropriate sources of H(+) or X(+) (X = Br, I) to remove a methyl and in some cases incorporate the counterion (e.g., arylthio or cyano) to give stable complexes. These derivatives can in turn serve as starting materials for other Cu(III) complexes.