Highly efficient catalytic dehydrative S-allylation of thiols and thioic S-acids
作者:Shinji Tanaka、Prasun Kanti Pradhan、Yusuke Maegawa、Masato Kitamura
DOI:10.1039/c0cc00096e
日期:——
A SH-selective allylation method using [CpRu(2-quinolinecarboxylato)(η3-C3H5)]PF6 has been realized in various solvents including aqueous media to give allyl sulfides and allyl S-thioates, demonstrating the potential applicability to lipopeptide chemistry.
One-pot synthesis of thioesters with sodium thiosulfate as a sulfur surrogate under transition metal-free conditions
作者:Yen-Sen Liao、Chien-Fu Liang
DOI:10.1039/c8ob00178b
日期:——
In this paper, we report an efficient synthetic method for thioester formation fromsodium thiosulfate pentahydrate, organic halides, and aryl anhydrides. In the one-pot two-step reactions developed in this study, sodium thiosulfate was used as the sulfur surrogate for acylation with anhydrides, followed by substitution with organic halides through the in situ generation of thioaroylate. Furthermore
Atmospheric Oxygen Mediated Radical Hydrothiolation of Alkenes
作者:Ruairí O. McCourt、Eoin M. Scanlan
DOI:10.1002/chem.202002542
日期:2020.12.4
hydrothiolation of alkenes (and alkyne) is reported. A variety of sulfur containing motifs including alkanethiols, thiophenols and thioacids undergo an atmospheric oxygen‐mediated radical hydrothiolation reaction with a plethora of alkenes in good yield with excellent functional group compatibility, typically with short reaction times to furnish a range of functionalized products. Biomolecules proved
Poly(3,4‐dimethyl‐5‐vinylthiazolium) was synthesized from 3,4‐dimethyl‐5‐vinylthiazole through free radical polymerization and was examined as polymer precatalysts in the presence of 1,8‐diazabicyclo[5.4.0]undec‐7‐ene (DBU) for the thioesterification of aldehydes with thiols. The poly(5‐vinylthiazolium)/DBU had excellent catalytic activity and could be reused 10 times without a considerable loss of
Synthesis of Thioesters by Simultaneous Activation of Carboxylic Acids and Alcohols Using PPh<sub>3</sub>/NBS with Benzyltriethylammonium Tetrathiomolybdate as the Sulfur Transfer Reagent
A new and simple route for the synthesis of thioesters starting from carboxylicacids and alcohols is reported by usingtetrathiomolybdate as the key sulfurtransferreagent. Triphenylphosphane and N-bromosuccinimide were used for the activation of the carboxylicacid and alcohol in the same pot followed by the transfer of sulfur from tetrathiomolybdate. Thioesters were obtained in good to moderate