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- Publisher Website: 10.1002/chem.201405356
- Scopus: eid_2-s2.0-84920861228
- WOS: WOS:000347615200033
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Article: Long-Lived Excited States of Zwitterionic Copper(I) Complexes for Photoinduced Cross-Dehydrogenative Coupling Reactions
Title | Long-Lived Excited States of Zwitterionic Copper(I) Complexes for Photoinduced Cross-Dehydrogenative Coupling Reactions |
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Authors | |
Keywords | Carboranes Copper Cross-coupling Photocatalysis UV/Vis spectroscopy |
Issue Date | 2015 |
Publisher | Wiley. |
Citation | Chemistry - A European Journal, 2015, v. 21, p. 1184-1190 How to Cite? |
Abstract | Four heteroleptic copper(I) complexes containing phenanthroline and monoanionic nido-carborane-diphosphine ligands have been prepared and structurally characterized by various spectroscopic techniques and X-ray diffraction. These complexes exhibit intense absorptions in the visible range and excited-state lifetimes on the microsecond scale. Their application in visible-light-induced cross-dehydrogenative coupling reactions was investigated. Preliminary studies showed that one of the four copper(I) complexes is an efficient catalyst for photoinduced oxidative C[BOND]H functionalization using oxygen as oxidant. Furthermore, α-functionalized tertiary amines were obtained in good-to-excellent yields by light irradiation (λ>420 nm) of a mixture of our CuI complex, tertiary amines, and a variety of nucleophiles (nitroalkane, acetone, or indoles) under aerobic conditions. Electron paramagnetic resonance measurements provided evidence for the formation of superoxide radical anions (O2−⋅) rather than singlet oxygen (1O2) during these photocatalytic reactions. |
Persistent Identifier | http://hdl.handle.net/10722/215139 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Wang, B | - |
dc.contributor.author | Shelar, DP | - |
dc.contributor.author | Han, XZ | - |
dc.contributor.author | Li, TT | - |
dc.contributor.author | Guan, X | - |
dc.contributor.author | Lu, W | - |
dc.contributor.author | Liu, K | - |
dc.contributor.author | Chen, Y | - |
dc.contributor.author | Fu, WF | - |
dc.contributor.author | Che, CM | - |
dc.date.accessioned | 2015-08-21T13:15:37Z | - |
dc.date.available | 2015-08-21T13:15:37Z | - |
dc.date.issued | 2015 | - |
dc.identifier.citation | Chemistry - A European Journal, 2015, v. 21, p. 1184-1190 | - |
dc.identifier.uri | http://hdl.handle.net/10722/215139 | - |
dc.description.abstract | Four heteroleptic copper(I) complexes containing phenanthroline and monoanionic nido-carborane-diphosphine ligands have been prepared and structurally characterized by various spectroscopic techniques and X-ray diffraction. These complexes exhibit intense absorptions in the visible range and excited-state lifetimes on the microsecond scale. Their application in visible-light-induced cross-dehydrogenative coupling reactions was investigated. Preliminary studies showed that one of the four copper(I) complexes is an efficient catalyst for photoinduced oxidative C[BOND]H functionalization using oxygen as oxidant. Furthermore, α-functionalized tertiary amines were obtained in good-to-excellent yields by light irradiation (λ>420 nm) of a mixture of our CuI complex, tertiary amines, and a variety of nucleophiles (nitroalkane, acetone, or indoles) under aerobic conditions. Electron paramagnetic resonance measurements provided evidence for the formation of superoxide radical anions (O2−⋅) rather than singlet oxygen (1O2) during these photocatalytic reactions. | - |
dc.language | eng | - |
dc.publisher | Wiley. | - |
dc.relation.ispartof | Chemistry - A European Journal | - |
dc.rights | Preprint This is the pre-peer reviewed version of the following article: [FULL CITE], which has been published in final form at [Link to final article]. Authors are not required to remove preprints posted prior to acceptance of the submitted version. Postprint This is the accepted version of the following article: [full citation], which has been published in final form at [Link to final article]. In addition, authors may also transmit, print and share copies with colleagues, provided that there is no systematic distribution of the submitted version, e.g. posting on a listserve, network or automated delivery. | - |
dc.subject | Carboranes | - |
dc.subject | Copper | - |
dc.subject | Cross-coupling | - |
dc.subject | Photocatalysis | - |
dc.subject | UV/Vis spectroscopy | - |
dc.title | Long-Lived Excited States of Zwitterionic Copper(I) Complexes for Photoinduced Cross-Dehydrogenative Coupling Reactions | - |
dc.type | Article | - |
dc.identifier.email | Guan, X: xgguan@hku.hk | - |
dc.identifier.email | Che, CM: cmche@hku.hk | - |
dc.identifier.authority | Che, CM=rp00670 | - |
dc.identifier.doi | 10.1002/chem.201405356 | - |
dc.identifier.scopus | eid_2-s2.0-84920861228 | - |
dc.identifier.hkuros | 246904 | - |
dc.identifier.volume | 21 | - |
dc.identifier.spage | 1184 | - |
dc.identifier.epage | 1190 | - |
dc.identifier.isi | WOS:000347615200033 | - |
dc.publisher.place | Weinheim, Germany | - |