Indium(iii) catalysed substrate selective hydrothiolation of terminal alkynes
作者:Rupam Sarma、Nimmakuri Rajesh、Dipak Prajapati
DOI:10.1039/c2cc30350g
日期:——
In(OTf)3 is reported as the first catalyst having the ability to selectively catalyse both Markovnikov and anti-Markovnikov hydrothiolation of terminal alkynes under identical reaction conditions depending upon the nature of the thiol employed.
One-Pot Synthesis of Alkyl Styryl Sulfides Free from Transition Metal/Ligand Catalyst and Thiols
作者:Adrián A. Heredia、Alicia B. Peñéñory
DOI:10.1002/ejoc.201201163
日期:2013.2
developed. This methodology involves the in situ generation of thiolate anions by nucleophilic substitution between potassium thioacetate and alkyl halides followed by fragmentation. Further reactions of these thiolate anions with substituted (E,Z)-β-styryl halides gave the corresponding sulfides with retention of stereochemistry in good to excellent yields. This procedure does not require a metal catalyst
Electrophilic Vinylation of Thiols under Mild and Transition Metal‐Free Conditions
作者:Laura Castoldi、Ester Maria Di Tommaso、Marcus Reitti、Barbara Gräfen、Berit Olofsson
DOI:10.1002/anie.202002936
日期:2020.9
methodology displays high functional group tolerance and proceeds under mild and transition metal‐free conditions without the need for excess substrate or reagents. Mercaptothiazoles could be vinylated under modified conditions, resulting in opposite stereoselectivity compared to previous reactions with vinyliodonium salts. Novel VBX reagents with substituted benziodoxolonecores were prepared, and improved
<i>syn</i>-Selective Difunctionalization of Bicyclobutanes Enabled by Photoredox-Mediated C–S σ-Bond Scission
作者:Huamin Wang、Johannes E. Erchinger、Madina Lenz、Subhabrata Dutta、Constantin G. Daniliuc、Frank Glorius
DOI:10.1021/jacs.3c08512
日期:2023.11.1
regio- and syn-selectivity is disclosed. C–S σ-bond cleavage of partially unsaturated sulfur-containing bifunctional reagents in an overall strain-release-driven process enables the thio-alkynylation, -alkenylation, and -allylation of BCBs under mild conditions and demonstrates the generality of this protocol. Mechanisticstudies suggest that the intermediacy of cyclic distonic radical cations might be