File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Long-Lived Excited States of Zwitterionic Copper(I) Complexes for Photoinduced Cross-Dehydrogenative Coupling Reactions

TitleLong-Lived Excited States of Zwitterionic Copper(I) Complexes for Photoinduced Cross-Dehydrogenative Coupling Reactions
Authors
Issue Date2015
PublisherWiley.
Citation
Chemistry - A European Journal, 2015, v. 21, p. 1184-1190 How to Cite?
AbstractFour 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 Identifierhttp://hdl.handle.net/10722/215139

 

DC FieldValueLanguage
dc.contributor.authorWang, B-
dc.contributor.authorShelar, DP-
dc.contributor.authorHan, XZ-
dc.contributor.authorLi, TT-
dc.contributor.authorGuan, X-
dc.contributor.authorLu, W-
dc.contributor.authorLiu, K-
dc.contributor.authorChen, Y-
dc.contributor.authorFu, WF-
dc.contributor.authorChe, CM-
dc.date.accessioned2015-08-21T13:15:37Z-
dc.date.available2015-08-21T13:15:37Z-
dc.date.issued2015-
dc.identifier.citationChemistry - A European Journal, 2015, v. 21, p. 1184-1190-
dc.identifier.urihttp://hdl.handle.net/10722/215139-
dc.description.abstractFour 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.languageeng-
dc.publisherWiley. -
dc.relation.ispartofChemistry - A European Journal-
dc.rightsPreprint 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.titleLong-Lived Excited States of Zwitterionic Copper(I) Complexes for Photoinduced Cross-Dehydrogenative Coupling Reactions-
dc.typeArticle-
dc.identifier.emailGuan, X: xgguan@hku.hk-
dc.identifier.emailChe, CM: cmche@hku.hk-
dc.identifier.authorityChe, CM=rp00670-
dc.identifier.doi10.1002/chem.201405356-
dc.identifier.hkuros246904-
dc.identifier.volume21-
dc.identifier.spage1184-
dc.identifier.epage1190-
dc.publisher.placeWeinheim, Germany-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats