Gaertner, Tobias and Henze, Wolfram and Gschwind, Ruth M. (2007) NMR-detection of Cu(III) intermediates in substitution reactions of alkyl halides with Gilman cuprates. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 129 (37). 11362-+. ISSN 0002-7863,
Full text not available from this repository. (Request a copy)Abstract
The first NMR observation of the long-proposed Cu(III) intermediate in a substitution reaction of methylhalides with organocuprates is presented. One-dimensional H-1 and HMBC spectra give for the first time direct experimental evidence for a square planar coordination of the Cu(III) intermediate in solution. The presence of 4,4-dimethylcyclohexenone increases the detectable amount of the trimethylcyano Cu(III) species significantly, whereas in pure substitution reactions the proposed tetraalkyl Cu(III) species seems to be more stable in diethyl ether.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ORGANOCUPRATE CONJUGATE ADDITION; RAPID-INJECTION NMR; DIETHYL-ETHER; ORGANIC HALIDES; REAGENTS; CYANOCUPRATE; AGGREGATION; REACTIVITY; |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Organische Chemie > Arbeitskreis Prof. Dr. Ruth Gschwind |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 01 Dec 2020 07:10 |
| Last Modified: | 01 Dec 2020 07:10 |
| URI: | https://pred.uni-regensburg.de/id/eprint/32202 |
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