Diversification of Trifluoromethylthiolation of Aromatic Molecules with Derivatives of Trifluoromethanesulfenamide
作者:Monika Horvat、Marjan Jereb、Jernej Iskra
DOI:10.1002/ejoc.201800551
日期:2018.8.1
react by trifluoromethylthiolation of itself. This reaction was the most important side reaction of 1a. The pentafluoro derivative 1c was less reactive. Solvent played an important role in the transformation and, depending on the substrate, dichloromethane, hexane or trifluoroaceticacid gave the best yield of various trifluoromethylthiolated aromatic molecules (63–98 %).
Novel N-hydroxyamide derivatives are disclosed. These N-hydroxyamide derivatives inhibit UPD-3-O—(R-3-hydroxymyristoyl)-N-acetylglucosamine deacetylase, an enzyme present in gram negative bacteria and are therefore useful as antimicrobials and antibiotics. Methods of synthesis and of use of the compounds are also disclosed.
Catalytic enantioselective synthesis of chiral sulfonium ylides with S-stereogenic center
作者:Xu-Jie Wang、Huan-Huan Liu、Jun Kee Cheng、Shao-Hua Xiang、Bin Tan
DOI:10.1016/j.chempr.2023.02.017
日期:2023.3
developed the first catalytic enantioselective synthesis of sulfonium ylides with a chiral sulfur center. They are constructed from a broad array of sulfides in high yields (up to 98%) and enantioselectivities (up to 99%) through copper-catalyzed intramolecular carbene transfer reaction. The obtained ylides could be converted into alkylidenecyclopropanes with efficient sulfur-to-carbon chirality transfer.
作者:Miraghaee, Seyedesahar、Umemoto, Teruo、Hammond, Gerald B.
DOI:10.1021/acs.orglett.4c02293
日期:——
one-step reaction from commercial materials, is a shelf-stable and powerful electrophilic trifluoromethylthiolating (CF3S) reagent with wide reactivity profile. Activation of 1 with triflic acid (TfOH) yields two reactive species A and B, depending on the molar ratios of TfOH/1. B showed unprecedented high reactivity, making possible the trifluoromethylthiolation of electron-deficient aromatic systems. In
Electrophilic Aromatic Trifluoromethylthiolation with the Second Generation of Trifluoromethanesulfenamide
作者:Thierry Billard、Sébastien Alazet
DOI:10.1055/s-0034-1379501
日期:——
Direct trifluoromethylthiolation of various aromatic and heteroaromatic compounds, variously substituted, can be performed with the second generation of trifluoromethanesulfenamide via a 'Friedel-Crafts-like reaction'. This reaction requires mild conditions with a catalytic amount of protic or Lewis acid. Good results have been obtained, even with aromatic compounds bearing deactivating substituents.