Harnessing the catalytic behaviour of 1,1,1,3,3,3-hexafluoro-2-propanol (HFIP): An expeditious synthesis of thioesters
作者:Pallavi Singh、Rama Krishna Peddinti
DOI:10.1016/j.tetlet.2017.04.004
日期:2017.5
promoting the thiocarbonylation of acyl halides and thiols is disclosed. HFIP was recovered with ease and reused for further reactions without any loss of reactivity. Both aryl and alkylthiols bearing electron-donating and electron-withdrawing groups as well as aryl- and alkyl acyl halides worked well in this reaction. Inexpensive precursors, short reaction time, obviating workup, high atom economy, and
Methanesulfonic anhydride-promoted sustainable synthesis of thioesters from feedstock acids and thiols
作者:Pallavi Singh、Rama Krishna Peddinti
DOI:10.1007/s12039-020-01871-5
日期:2021.3
Abstract An unprecedented metal-, halogen- and solvent-free, MSAA-promoted S-carbonylation of thiols with feedstock acids has been developed. This new transformation provides an efficient and atom-economic strategy for the synthesis of thioesters in a single operation from readily available and inexpensive starting materials. The reaction avoids the use of expensive and hazardous coupling reagents
Catalyst-free direct decarboxylative coupling of α-keto acids with thiols: a facile access to thioesters
作者:Kelu Yan、Daoshan Yang、Wei Wei、Jing Zhao、Yuanyuan Shuai、Laijin Tian、Hua Wang
DOI:10.1039/c5ob00769k
日期:——
A novel, efficient, and catalyst-free strategy has been initially developed for the construction of thioesters via the direct radical oxidative decarboxylation of α-ketoacids with thiols, and the corresponding target products were obtained in moderate to good yields. It offers an alternative approach for the synthesis of useful diverse thioesters.
Visible-Light-Promoted Thiyl Radical Generation from Sodium Sulfinates: A Radical–Radical Coupling to Thioesters
作者:Ganganna Bogonda、Dilip V. Patil、Hun Young Kim、Kyungsoo Oh
DOI:10.1021/acs.orglett.9b01218
日期:2019.5.17
available starting materials: acid chlorides and sodium sulfinates. The facile generation of acyl radical species under the visible light photoredox conditions allows the formation of thiylradical species from sodium sulfinates via multiple single electron transfer reactions, where the final acyl radical-thiyl radical coupling has been accomplished. The direct radical–radical coupling strategy offers a mild
Synthesis of Thioesters from Aldehydes via N‐Heterocyclic Carbene (NHC) Catalyzed Radical Relay
作者:Yunquan Man、Xiaojun Zeng、Bo Xu
DOI:10.1002/chem.202203716
日期:2023.3.22
efficient reaction has been developed for thioesterification of aldehydesviaradicalrelay by NHC catalysis. The key step is the coupling of the Breslow radical cation with the heteroatom radical (sulfur-radical). The excellent yields and broad substrate scope illustrated the efficiency of this strategy for achieving novel reactions viaNHC catalysis.