A photocatalytic acid- and base-free Meerwein-Ponndorf-Verley-type reduction using a [Ru(bpy)3]2+/viologen couple

Chemistry : a European Journal
José R HeranceHermenegildo García

Abstract

A photocatalytic system to effect the Meerwein-Ponndorf-Verley reduction of carbonylic compounds to alcohols has been developed. The system comprises [Ru(bpy)3]2+ as a photosensitizer, triethanolamine as a sacrificial electron donor, viologen as an electron acceptor, and the carbonyl compound and iPrOH as Meerwein-Ponndorf-Verley reagents. The photocatalytic reaction can be performed in neat iPrOH or in 1-butyl-3-methylimidazolium ionic liquid. Mass spectrometric detection of the viologen hydride derivative VH+ confirms that this species is the reducing agent responsible for the carbonyl compound reduction. The reaction intermediates involved in the photocatalytic system have also been characterized by laser flash photolysis.

References

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Citations

Jul 8, 1985·FEBS Letters·R E EtheredgeM J Glimcher
Apr 26, 2016·Chemical Reviews·Kazimer L SkubiTehshik P Yoon
Mar 7, 2014·Chemistry : a European Journal·Matthew N HopkinsonFrank Glorius
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Sep 4, 2009·Dalton Transactions : an International Journal of Inorganic Chemistry·Mercedes AlvaroHermenegildo García
Mar 21, 2013·Chemical Reviews·Christopher K PrierDavid W C MacMillan

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