Brønsted Acid-Assisted Zinc-Catalyzed Markovnikov-Type Hydrothiolation of Alkenes Using Thiols
作者:Nobukazu Taniguchi
DOI:10.1021/acs.joc.0c00487
日期:2020.5.15
hydrothiolation of alkenes with thiols was achieved in the presence of 4-toluenesulfonic acid. Through this procedure, Markovnikov-type sulfides were synthesized in excellent yields, and the formation of anti-Markovnikov-type sulfides was suppressed. Furthermore, the combination of numerous aryl alkenes with arenethiols or alkyl thiols was achieved using the procedure.
Regioselective N‐Functionalization of Tautomerizable Heterocycles through Methyl Trifluoromethanesulfonate‐Catalyzed Substitution of Alcohols and Alkyl Group Migrations
作者:Surajit Duari、Subrata Biswas、Arnab Roy、Srabani Maity、Abhishek Kumar Mishra、Aguinaldo R. Souza、Asma M. Elsharif、Nelson H. Morgon、Srijit Biswas
DOI:10.1002/adsc.202101196
日期:2022.2.15
(MeOTf) was found to catalyze the reaction, which revealed the catalytic property of MeOTf. A mechanism was established through experiments as well as DFT calculations wherein the −OH group of alcohols were converted to the corresponding −OMe groups and in situ generated TfOH. The −OMe groups produced underwent TfOH catalyzed −X alkylation (X=O, S) of the heterocycles followed by −X- to −N-alkyl group
Markovnikov-Selective Hydrothiolation of Styrenes: Application to the Synthesis of Stereodefined Trisubstituted Olefins
作者:Markku A. Savolainen、Jimmy Wu
DOI:10.1021/ol4015909
日期:2013.7.19
BT-sulfones react with aromatic aldehydes to furnish trisubstituted alkenes with excellent Z stereoselectivity. These sulfones are synthesized by hydrothiolation of styrene and styrenyl derivatives (followed by oxidation). This method provides a conceptually novel way to prepare these important sulfur compounds.
nickel-catalyzed oxidative dehydrogenative coupling reaction of alkane with thiol for the construction of C(sp3)-S bond has been established, affording more than 50 alkyl thioethers. Notably, pharmaceutical and agrochemicals, such as Provigil, Chlorbenside and Pyridaben, were readily synthesized by this approach. The sterically hindered ligand BC and disulfide which was formed in situ oxidation of thiol, efficiently