An odorless, one-pot synthesis of nitroaryl thioethers via S<sub>N</sub>Ar reactions through the in situ generation of S-alkylisothiouronium salts
作者:Guo-ping Lu、Chun Cai
DOI:10.1039/c4ra11490f
日期:——
A newly developed C–S bond formation nucleophilic aromaticsubstitution (SNAr) reaction in aqueous Triton X-100 (TX100) micelles has been disclosed. This chemistry, in which odorless, cheap and stable thiourea in place of thiols is used as the sulfur reagent, provides an efficient approach for the generation of nitroarylthioethers, which are useful structural units of many bioactive molecules, rendering
Xanthates as Thiol Surrogates for Nucleophilic Substitution with Aryl Halides
作者:Anatolii I. Sokolov、Andrey A. Mikhaylov、Nadezhda S. Baleeva、Mikhail S. Baranov
DOI:10.1002/ejoc.202100647
日期:2021.8.13
We herein report an unprecedented xanthate-based protocol for the preparation of aryl-alkyl thioethers. Heating xanthates with aryl halides and namely cesium carbonate in methanol provides the target thioethers in generally good yields within short reaction times. This method allows one to avoid contact with odorous thiols and also to introduce substituents of which the corresponding thiols are virtually
Several derivatives of diltiazem (9a-c) have been synthesized from the oxamate (6) through the carbon-carbon ring closure of the sulfur-stabilized benzylic anion and the ester carbonyl group, followed by stereoselective reduction of the C3-carbonyl of the 1, 5-benzothiazepine-dione (7).