Trithioorthoester Exchange and Metathesis: New Tools for Dynamic Covalent Chemistry
作者:Michael Bothe、A. Gastón Orrillo、Ricardo L. E. Furlan、Max von Delius
DOI:10.1055/s-0039-1690992
日期:2019.10
acid-catalyzed exchangereaction of trithioorthoesters with thiols. We found that trithioorthoester exchange occurs readily in various solvents in the presence of stoichiometric amounts of strong Bronsted acids or catalytic amounts of certain Lewis acids. The scope of the exchangereaction was explored with various substrates, and conditions were identified that permit clean metathesis reactions between two
The use of sulfines in nucleophilic acylation reactions
作者:G.E. Veenstra、B. Zwanenburg
DOI:10.1016/0040-4020(78)80187-2
日期:1978.1
dithioketal monoxide which upon acidolysis under anhydrous conditions are converted into vinylsulfides. The mechanism of the formation of the vinylsulfides is discussed. The acylanion equivalents are acylated with benzoylchloride, CO2 and benzaldehyde. The use of Cu1 and 18-crown-6 as a catalyst appears to be crucial in some reactions. Michael additions of the dithioacetal monoxides to acrylonitrile