29833-93-0Relevant academic research and scientific papers
Ketene thioacetals from α-chloromercaptals
Bellesia,Boni,Ghelfi,Pagnoni
, p. 3179 - 3184 (2007/10/02)
Excellent yields of ketene thioacetals are obtained from 2-(1- chloroalkyl)-1,3-dithiolanes or 2-(1-chloroalkyl)-1,3-dithianes.
PREPARATION OF ALKENYL SULFIDES AND ENAMINES BY ALKYLIDENATION OF CARBOXYLIC ACID DERIVATIVES
Takai, Kazuhiko,Fujimura, Osamu,Kataoka, Yasutaka,Utimoto, Kiitiro
, p. 211 - 214 (2007/10/02)
Treatment of S-alkyl thioesters with a reagent prepared from RCHBr2, Zn, TiCl4, and TMEDA in THF at 25 degC gives Z-alkenyl sulfides selectively in good to excellent yields.Using the alkylidenation method, ketene dithioacetals and enamines are produced fr
Reactions of 1,3-Dithiolan-2-ylium and 1,3-Dithian-2-ylium Tetrafluoroborates and Ambident 2-Styryl Derivatives
Klaveness, Jo,Rise, Frode,Undheim, Kjell
, p. 373 - 380 (2007/10/02)
The ambident 2-styryl-1,3-dithiolan-2-ylium and 2-styryl-1,3-dithian-2-ylium cations react with preferential carbon-carbon bond formation at the β ethylenic carbon when treated with methylmagnesium iodide.In the lithium aluminium hydride reaction, reduction occurs at either electrophilic carbon center.Methanol and thiophenol react selectively with the β carbon of the side chain.The adduct formation with the heteroatom nucleophiles is readily reversed by acid catalysis.In the absence of the styryl group, the nucleophilic addition is at C-2.Dithioketals of symmetric 1,2-divarbonyl derivatives are readily formed by zinc-induced reductive dimerization of 1,3-dithiolan- and 1,3-dithian-2-ylium salts.
DEALKYLATIVE DECARBOXYLATION.IV. A NOVEL APPROACH TO KETENE THIOACETALS
Belletire, J.L.,Walley, D.R.,Fremont,S.L.
, p. 5729 - 5732 (2007/10/02)
Reaction of 2-carbomethoxy-1,3-dithiane enolate with an equimolar mixture of trimethylacetyl chloride and an aldehyde followed by dealkylative decarboxylation of the resulting pivalate yields ketene thioacetals.
