Hydrothiolation of alkenes
Web28 jan. 2024 · Reaction of bulk solid requires heating to 400 °C: O s ( s) + 2 O 2 ( g) → O S 4. Since Osmium tetroxide is expensive and highly toxic, the reaction with alkenes has been modified. Catalytic amounts of OsO 4 and stoichiometric amounts of an oxidizing agent such as hydrogen peroxide are now used to eliminate some hazards. Web13 okt. 1999 · The hydrosilylation reaction of the terminal alkynes with PhSiH 3 at room temperature produces the trans -vinylsilane as the major product along with the silylalkyne and the corresponding alkene.
Hydrothiolation of alkenes
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Web16 dec. 2024 · The RhRuCNT nanohybrid was investigated in the efficient hydrothiolation 17 and hydrophosphinylation 18 of various alkenes and alkynes, under mild reaction … Web18 mrt. 2014 · Alkyne hydrothiolation – that is, the addition of the SH bond of a thiol across the carbon-carbon triple bond of an unactivated alkyne – belongs to the ample class of hydrofunctionalization reactions whose main feature is …
WebWhile much progress has been made in the development of alkene and alkyne hydroacylation reactions with aldehydes containing functional groups capable of coordinating the rhodium center, intermolecular … WebThe thiol-yne reaction (also known as alkyne hydrothiolation) is an organic reaction between a thiol and an alkyne. The reaction product is an alkenyl sulfide. The reaction …
Web15 apr. 2024 · Here we report a remote aliphatic C–H thiolation process with predictable and switchable regioselectivity through NiH-catalysed migratory hydrothiolation of two feedstock chemicals... Web13 nov. 2014 · ChemInform Abstract: Metal-Catalyzed and Metal-Free Alkyne Hydrothiolation: Synthetic Aspects and Application Trends
The thiol-ene reaction (and analogous thiol-yne reaction) have extensively been used in generating reactive intermediates for the cyclization of unsaturated substrates. Radical hydrothiolation of an unsaturated functional group indirectly generates a carbon-centered radical, which can then cyclize intramolecularly onto alkenes, oxime ethers, isocyanides, cyano groups, and aromatic rings. T…
Web29 sep. 2024 · Based on the redox reactions of Togni-II reagent and thiols, a thiol-tuned selective functionalization of unactivated olefins was disclosed. In combination with aryl thiols, stoichiometric amount of Togni-II reagent prompted a hydrotrifluoromethylation of alkenes, in which, aryl thiols played as reductant and hydrogen source; while by … creativity toys for kidsWeb15 apr. 2024 · Unactivated internal olefins also readily undergo alkene isomerization-hydrothiolation smoothly (Fig. 3b). As expected, E/Z alkene mixtures ( 3n – 3r and 3t ) react well, and high selectivity for thiolation at the benzylic position is observed, regardless of the starting position of the C=C bond. creativmesse 2023WebEnantio- and Regioselective CuH-Catalyzed Hydroamination of Alkenes. 8. A Simple Catalytic Mechanism for the Direct Coupling of α-Carbonyls with Functionalized Amines: A One-Step Synthesis of... creativly studio websiteWeb4 mrt. 2024 · Topics discussed in this chapter include the hydroborations of alkynes affording alkenylboron compounds; the hydrosilylation of alkynes generating alkenyl silanes; the hydrostannation of alkynes producing alkenylstannanes; the hydroamination of alkynes giving enamines and imines; the cyclohydroamination of alkynes for the synthesis of … creativ messe ludwigshafenWebA highly regio- and stereocontrolled procedure for the synthesis of vinyl dithiocarbamates via catalyst-free hydrothiolation of unactivated alkynes with in situ prepared dithiocarbamic … creativmesse münchen 2023WebBy now, various systems, including alkynes, (8) allenes, (9) diene, (10) and alkenes, (11) have been studied for the hydrothiolation reactions of both Markovnikov and anti-Markovnikov additions. Among these reports, hydrothiolation of electronically unactivated allylamines is relatively underexplored. creativmesse münchen 2024Web6 jul. 2016 · Hydrothiolation of Alkenes and Alkynes Catalyzed by 3,4-Dimethyl-5-vinylthiazolium iodide and Poly (3,4-dimethyl-5-vinylthiazolium) iodide Supill Chun, … creativmesse frankfurt