Electroreductive Nickel‐Catalyzed Thiolation: Efficient Cross‐Electrophile Coupling for C−S Formation
作者:Nate W. J. Ang、Lutz Ackermann
DOI:10.1002/chem.202005449
日期:2021.3.12
are of utmost topical importance towards the effective development of pharmaceuticals and functional materials. Herein, we present an efficient and mild electrochemical thiolation by cross‐electrophilecoupling of alkyl bromides with functionalized bench‐stable thiosulfonates to access alkyl sulfides with excellent efficacy and broad functional group tolerance. Cyclic voltammetry and potentiostatic
unsymmetrical sulfides from esters and thiols in the presence of InI3 and either 1,1,3,3-tetramethyldisiloxane (TMDS) or PhSiH3 as the reductant was developed. This protocol was applied to not only benzoic acid esters that have a methoxy, methyl, chloro, bromo, iodo, or trifluoromethyl group on the aromatic ring but also aliphatic acid esters with either aromatic or aliphatic thiols. A reaction mechanism
Dealkylative intercepted rearrangement reactions of sulfur ylides
作者:Claire Empel、Katharina J. Hock、Rene M. Koenigs
DOI:10.1039/c8cc08821g
日期:——
Sulfur ylides are well-known to undergo sigmatropic rearrangementreaction. Herein, we describe a novel reactivity of sulfur ylides, which provides access to the product of a formal functional group metathesis upon dealkylative interception of the rearrangement process. Using a simple iron catalyst and in situ generated diazoalkanes this method provides access to α-mercaptoacetonitrile derivatives
Alkylthioether synthesis via imidazole mediated mitsunobu condensation
作者:J.R. Falck、Jing-Yu Lai、Su-Dong Cho、Jurong Yu
DOI:10.1016/s0040-4039(99)00390-1
日期:1999.4
Unsymmetric alkylthioethers can be prepared from aliphatic thiols and unhindered alcohols under modified Mitsunobu conditions using trimethylphosphine/1,1'-(azodicarbonyl)dipiperdine (ADDP) in the presence of imidazole (2 equivalents). (C) 1999 Elsevier Science Ltd. All rights reserved.
Single-Step Thioetherification by Indium-Catalyzed Reductive Coupling of Carboxylic Acids with Thiols
Direct thioetherification from a variety of aromatic carboxylic acids and thiols using a reducing system combined with InBr3 and 1,1,3,3-teramethyldisiloxane (TMDS) in a one-pot procedure is demonstrated. It was also found that a system combined with InI3 and TMDS underwent thioetherification of aliphatic carboxylic acids with thiols.