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
Acceleration of Thiol Ester Hydrolysis by Cyclodextrins: Evidence from Rate and Computational Studies
作者:Subramanian Annalakshmi、Kasi Pitchumani
DOI:10.1002/ejoc.200500770
日期:2006.2
Hydrolysis of diaryl thiol esters with different substituents is studied in the presence of cyclodextrins under alkaline conditions. The presence of cyclodextrin enhances the rate of hydrolysis significantly and covalent catalysis by secondary hydroxy groups of cyclodextrin is proposed. The observed results and the proposed model find support in molecular dynamics simulations and free energy calculations
(6-Oxo-6H-pyridazin-1-yl)phosphoric acid diethyl esters (3) are efficient and selective coupling agents for equimolar esterification of carboxylicacids and alcohols. Esterification of aliphatic and aromatic carboxylicacids with aliphatic and aromatic alcohols using 3 afforded the corresponding esters chemoselectively in good to excellent yield.
Synthesis of Thiol Esters Using Nano CuO/Ionic Liquid as an Eco-Friendly Reductive System Under Microwave Irradiation
作者:Juliano B. Azeredo、Marcelo Godoi、Ricardo S. Schwab、Giancarlo V. Botteselle、Antonio L. Braga
DOI:10.1002/ejoc.201300295
日期:2013.8
We report an efficient, fast, and environmentally friendly method for the synthesis of a wide range of thiolesters using stable diorganoyl disulfides and acyl chlorides, using CuO nanoparticles and [pmim]Br as the reductive system. This method gave good to excellent isolated yields of the desired products after only three minutes of microwave irradiation. Furthermore, by using the same green approach