Visible light promoted thiol-ene reactions using titanium dioxide
作者:Venugopal T. Bhat、Petar A. Duspara、Sangwon Seo、Nor Syazwani Binti Abu Bakar、Michael F. Greaney
DOI:10.1039/c4cc09987g
日期:——
The radical addition of thiols to alkenes is reported under photoredox conditions, usingvisiblelight and TiO2 as a cheap and readily available photocatalyst.
development of novel luminescentiridium(III) complexes with highly tunable emission energy and versatile applications is of particular importance. In this Communication, a series of luminescentiridium(III) complexes supported by chromophoric pyridinium-derived N-heterocyclic carbene (NHC) ligands that display tunable emission from 516 to 682 nm were prepared. These complexes can be used as photocatalysts
<i>Candida antarctica</i>Lipase B (CAL-B)-Catalyzed Carbon-Sulfur Bond Addition and Controllable Selectivity in Organic Media
作者:Feng-Wen Lou、Bo-Kai Liu、Qi Wu、De-Shui Lv、Xian-Fu Lin
DOI:10.1002/adsc.200800207
日期:2008.9.5
A novel enzymatic, promiscuous protocol for Candida antarctica lipase B (CAL-B)-catalyzed carbon-sulfur bond addition is described. Some control experiments have been designed to demonstrate the catalytic specificity of CAL-B. Selectivity between anti-Markovnikov addition and Markovnikovaddition was achieved in different organicmedia. A series of thioether-containing ester functional groups was synthesized
Transition Metal Photoredox Catalysis of Radical Thiol-Ene Reactions
作者:Elizabeth L. Tyson、Michael S. Ament、Tehshik P. Yoon
DOI:10.1021/jo3020825
日期:2013.3.1
We describe the anti-Markovnikov hydrothiolation of olefins using visible-light-absorbing transitionmetal photocatalysts. The key thiyl radical intermediates are generated upon quenching of photoexcited Ru*(bpz)32 with a variety of thiols. The adducts of a wide variety of olefins and thiols are formed in excellent yield (73–99%).
Redox Mediators in Visible Light Photocatalysis: Photocatalytic Radical Thiol–Ene Additions
作者:Elizabeth L. Tyson、Zachary L. Niemeyer、Tehshik P. Yoon
DOI:10.1021/jo500031g
日期:2014.2.7
useful radical thiol–ene reactions can be initiated by visiblelight irradiation in the presence of transition metal polypyridyl photocatalysts. The success of this method relies upon the use of p-toluidine as an essential additive. Using these conditions, high-yielding thiol–ene reactions of cysteine-containing biomolecules can be accomplished using biocompatibile wavelengths of visiblelight, under