67073-86-3Relevant academic research and scientific papers
Highly selective electrochemical fluorination of dithioacetal derivatives bearing electron-withdrawing substituents at the position α to the sulfur atom using poly(HF) salts
Yin, Bin,Inagi, Shinsuke,Fuchigami, Toshio
supporting information, p. 85 - 91 (2015/02/05)
Anodic fluorination of dithioacetals bearing electron-withdrawing ester, acetyl, amide, and nitrile groups at their α-positions was comparatively studied using various supporting poly(HF) salts like Et3N·nHF (n = 3-5) and Et4NF·nHF (
Cationic Polar Cycloadditions of Phenylthionium Ions with Olefines: A New Route to Thiochromans
Ishibashi, Hiroyuki,Okada, Motofumi,Sato, Kazumi,Ikeda, Masazumi,Ishiyama, Ko-ichi,Tamura, Yasumitsu
, p. 90 - 95 (2007/10/02)
Reaction of 2-chloro-N,N-dimethyl-2-(phenylthio)acetamide (1a) with styrene in the presence of stannic chloride gave 3,4-dihydro-N,N-dimethyl-4-phenyl-2H-1-benzothiopyran-2-carboxamide.The same benzothiopyran was also obtained from N,N-dimethyl-2-(phenylsulfinyl)acetamide and styrene under the Pummerer reaction conditions, but in lower yield.Similarly, α-chlorosulfides derived from ethyl 2-(phenylthio)acetate, 2-(phenylthio)acetonitrile, 1-(phenylthio)-2-propanone, and thioanisole reacted with styrene to give the corresponding 4-phenylbenzothiopyrans in variable yields.The reaction of 1a with trans-stilbene gave the expected benzothiopyran derivative, but the reaction of 1a with 1,1-diphenylethylene and phenylacetylene showed some variation of the reaction course.This cycloaddition reaction was extended to the intramolecular case.A possible mechanism for the formation of the benzothiopyran is discussed.
α,α'-Bisphenylthiocarbonyles en synthese organique; applications en serie indolique
Massiot, Georges,Mulamba, Tshilundu,Levy, Jean
, p. 241 - 248 (2007/10/02)
α'α'-bisphenylthioesters have been prepared by a Michael reaction between methyl bisphenylthioacetate and unencumbered activated olefins.They have been transformed into monosulfenylated esters by thiophenol in the presence of a catalytic amount of base.Th
REACTION OF ORGANIC SULFUR COMPOUNDS WITH SUPEROXIDE ANION-III. OXIDATION OF ORGANIC SULFUR COMPOUNDS TO SULFINIC AND SULFONIC ACIDS
Oae, Shigeru,Takata, Toshikazu,Kim, Yong Hae
, p. 37 - 44 (2007/10/02)
Organic sulfur compounds such as disulfide, thiolsulfinate, thiolsulfonate, thiol, sodium thiolate, and sodium sulfinate were readily oxidized to both sulfinic and sulfonic acids with superoxide anion generated from potassium superoxide and 18-crown-6-ether under mild conditions.However, both sulfide and sulfoxide did not react with superoxide anion, O2.Although thiol was easily oxidized to disulfide with O2 at room temperature, it was oxidized further with O2 at 60 deg C to the corresponding sulfinic and sulfonic acids.Symmetrical disulfide was obtained in the reaction of unsymmetrical thiolsulfinate or thiolsulfonate along with both sulfinic and sulfonic acids.Most reactive was thiolsulfinate which reacted at lower temperature ranging between -40 and 0 deg C to afford the products within 30 min.Relative reactivities fall in the following order: thiolsulfinate > thiolsulfonate > disulfide sodium thiolate sodium sulfinate.Polar solvents such as pyridine and acetonitrile were more effective than such a less polar solvent as benzene in the oxidation of the substrate, and increased amount of the crown ether shortened the reaction time.Nucleophilic attack of O2 and electron transfer processes are believed to be involved in these oxidations.
