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Development of new and efficient copper(II) complexes of hexyl bis(pyrazolyl)acetate ligands as catalysts for allylic oxidation.
- Source :
- Dalton Transactions: An International Journal of Inorganic Chemistry; 11/28/2020, Vol. 49 Issue 44, p15622-15632, 11p
- Publication Year :
- 2020
-
Abstract
- In this study, two new hexyl bis(pyrazol-1-yl)acetate ligands and related copper(II) complexes were prepared and fully characterized in the solid state and in solution. Their electronic and molecular structures were investigated by X-ray photoelectron spectroscopy and near edge X-ray absorption; their ligand molecular structural stability upon coordination to copper was also investigated. The Cu(II) complexes were studied as new catalysts in copper-catalyzed C–H oxidation for allylic functionalization (the Kharasch–Sosnovsky reaction) avoiding the use of any external reducing agents. Using 5 mol% of these catalysts and tert-butylperoxybenzoate as the oxidant, allylic benzoates were obtained in up to 90% yield: the general reaction time was decreased to 6 h and a 5 to 1 ratio of the alkene and tert-butylperoxybenzoate was used to overcome the two most important limitations on their use in chemistry. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14779226
- Volume :
- 49
- Issue :
- 44
- Database :
- Complementary Index
- Journal :
- Dalton Transactions: An International Journal of Inorganic Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 147039992
- Full Text :
- https://doi.org/10.1039/d0dt02952a