Quantitative aspects of radical addition. Part IV. Rate-constant ratios for addition of trichloromethyl and thiyl radicals to olefins
作者:J. I. G. Cadogan、I. H. Sadler
DOI:10.1039/j29660001191
日期:——
and trichloromethyl radicals from bromotrichloromethane. In a number of experiments both the unchanged olefins and the 1 : 1 adducts were estimated, thus accounting, for the first time, for all the olefin in the system. The results, while confirming the electrophilic character of the radicals studied, indicate that no single factor is entirely responsible for the variations in olefin reactivity. The absence
Visible-Light-Mediated Organocatalyzed Thiol–Ene Reaction Initiated by a Proton-Coupled Electron Transfer
作者:Vitalij V. Levin、Alexander D. Dilman
DOI:10.1021/acs.joc.9b01331
日期:2019.6.21
A convenient method for performing a thiol–ene reaction is described. The reaction is performed under blue-light irradiation and catalyzed by photoactive Lewis basic molecules such as acridine orange or naphthalene-fused N-acylbenzimidazole. It is believed that the process is initiated by a proton-coupled electron transfer process within the complex between the thiol and the Lewis basic catalyst.
Radical-mediated thiol–ene ‘click’ reactions in deep eutectic solvents for bioconjugation
作者:Mark D. Nolan、Andrea Mezzetta、Lorenzo Guazzelli、Eoin M. Scanlan
DOI:10.1039/d1gc03714e
日期:——
conditions, the thiol–ene reaction was applied to amino acid and peptideligation in DESs. The conditions facilitate highly-efficient synthesis of biomolecular targets using a ‘green’ methodology, with complete recycling of the reaction medium. Fluorescent labelling and glycosylation of a minimal sequence mimetic of angiotensin-converting enzyme 2 capable of binding the SARS-CoV-2 spike protein is demonstrated
Enzymatic Resolution and Decarboxylative Functionalization of α‐Sulfinyl Esters
作者:Suraksha Gahalawat、Yesu Addepalli、Stephen P. Fink、Lakshmi Kasturi、Sanford D. Markowitz、Joseph M. Ready
DOI:10.1002/chem.202302996
日期:2024.2
Enzymaticresolution of α-sulfinyl esters gives recovered ester and α-sulfinyl acid in high enantiomeric purity. Decarboxylative functionalization provides access to a wide range of optically active sulfoxides in both enantiomeric forms.