Luminescent tungsten() complexes as photocatalysts for light-driven C-C and C-B bond formation reactions

The realization of photocatalysis for practical synthetic application hinges on the development of inexpensive photocatalysts which can be prepared on a large scale. Herein an air-stable, visible-light-absorbing photoluminescent tungsten( vi ) complex which can be conveniently prepared at the gram-s...

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Published inChemical science (Cambridge) Vol. 11; no. 25; pp. 637 - 6382
Main Authors Yu, Daohong, To, Wai-Pong, Tong, Glenna So Ming, Wu, Liang-Liang, Chan, Kaai-Tung, Du, Lili, Phillips, David Lee, Liu, Yungen, Che, Chi-Ming
Format Journal Article
LanguageEnglish
Published CAMBRIDGE Royal Soc Chemistry 07.07.2020
Royal Society of Chemistry
Subjects
Aromatic compounds
Bonding
Bromides
Carboxylic acids
Chemistry
Chemistry, Multidisciplinary
Coupling
Covalent bonds
Electromagnetic absorption
Esters
Functional groups
Halides
NMR
Nuclear magnetic resonance
Photocatalysis
Photocatalysts
Photochemical reactions
Photoluminescence
Physical Sciences
Science & Technology
Tungsten
CROSS-COUPLING REACTIONS
ELECTRON-TRANSFER
ARYL HALIDES
IRON COMPLEXES
TRANSFER RADICAL-ADDITION
EMISSION QUANTUM YIELDS
DECARBOXYLATIVE ALKYLATION
LIVED EXCITED-STATES
METAL-FREE
PHOTOREDOX CATALYSIS
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Summary:The realization of photocatalysis for practical synthetic application hinges on the development of inexpensive photocatalysts which can be prepared on a large scale. Herein an air-stable, visible-light-absorbing photoluminescent tungsten( vi ) complex which can be conveniently prepared at the gram-scale is described. This complex could catalyse photochemical organic transformation reactions including borylation of aryl halides, such as aryl chloride, reductive coupling of benzyl bromides for C-C bond formation, reductive coupling of phenacyl bromides, and decarboxylative coupling of redox-active esters of alkyl carboxylic acid with high product yields and broad functional group tolerance. A luminescent tungsten( vi ) complex catalyses a broad spectrum of light-driven organic transformation reactions with high product yields and good functional group tolerance.
Bibliography:10.1039/d0sc01340d
Electronic supplementary information (ESI) available: Experimental details, photophysical data, DFT calculations and NMR spectral data. See DOI
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ISSN:2041-6520
2041-6539
DOI:10.1039/d0sc01340d