Visible-Light-Mediated Thiol–Ene Reactions through Organic Photoredox Catalysis
作者:Gaoyuan Zhao、Sarbjeet Kaur、Ting Wang
DOI:10.1021/acs.orglett.7b01441
日期:2017.6.16
Synthetically useful radical thiol–ene reactions can be initiated by visible-light irradiation in the presence of an organic photocatalyst, 9-mesityl-10-methylacridinum tetrafluoroborate. The key thiyl radical intermediates are generated upon quenching of the photoexcited catalyst with a variety of thiols. The success of this method requires only the use of near-stoichiometric levels of alkene coupling
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
作者:Sarbjeet Kaur、Gaoyuan Zhao、Evan Busch、Ting Wang
DOI:10.1039/c8ob02313a
日期:——
presence of visible light is used to initiate thiol–ene and thiol–yne reactions. Thiyl radicals are generated upon quenching the photoexcited catalyst with a range of thiols. The highlighted mild nature of the reaction conditions allows a broad substrate scope of the reactants. Relying on this efficient metal-free condition, both thiol–ene and thiol–yne reactions between carbohydrates and peptides could