Asymmetric hydrogenation of alkyl(vinyl)thioethers: a promising approach to α-chiral thioethers
摘要:
This paper describes the enantio selective hydrogenation of vinylthioethers. We show that thioether derivatives of maleic esters can be hydrogenated with full conversion and up to 60% ee, and that alpha-thioether cinnamic acids can be hydrogenated in 51% ee with modest conversion. (c) 2007 Elsevier Ltd. All rights reserved.
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%).
1,2-Thio Group Migration in Rh(II) Carbene Reactions
作者:Feng Xu、Weifeng Shi、Jianbo Wang
DOI:10.1021/jo050109v
日期:2005.5.1
A series of β-thio group substituted α-diazo carbonyl compounds have been prepared by nucleophilicsubstitutionreactions of thiophenol, thionaphthol, or benzyl mercaptan with β-acetoxy-α-diazo carbonyl compounds. The diazo decomposition of these diazo carbonyl compounds with various transition metal catalysts, including Rh(II) carboxylates and Cu(I) and Cu(II) complexes, has been investigated. It