5684-31-1Relevant academic research and scientific papers
Palladium-Catalyzed Synthesis of Aryl Vinyl Sulfides via 1,3-Oxathiolanes As Vinyl Sulfide Surrogates
Schmink, Jason R.,Dockrey, Summer A. Baker,Zhang, Tianyi,Chebet, Naomi,Van Venrooy, Alexis,Sexton, Mary,Lew, Sarah I.,Chou, Steffany,Okazaki, Ami
supporting information, p. 6360 - 6363 (2016/12/23)
A nontraditional approach to synthesizing aryl vinyl sulfides is described. 2,2-Diphenyl-1,3-oxathiolane slowly liberates a vinyl sulfide anion under basic conditions. Using a Pd/Xantphos catalyst system to activate a wide range of aryl bromides, this transient sulfide species can be effectively trapped and fed into a traditional Pd0/PdII catalytic cycle. Scope and limitations of the methodology are presented along with significant discussion of a competitive C-S bond activation by this catalyst system.
Ecofriendly fast batch synthesis of dioxolanes, dithiolanes, and oxathiolanes without solvent under microwave irradiation
Perio, Bertrand,Dozias, Marie-Joelle,Hamelin, Jack
, p. 428 - 430 (2013/09/08)
2,2-Dimethoxypropane and 3,3-dimethoxypentane react with 1,2-ethanediol, thio, and oxathio analogues to give the corresponding protected carbonyls in high yield under mild solvent-free conditions. These environmentally benign conditions under microwave irradiation are applied to a large-scale synthesis.
An effective synthesis of 1,3-oxathiolanes
Streinz, Ludvik,Koutek, Bohumir,Saman, David
, p. 665 - 671 (2007/10/03)
2-Alkyl-or 2,2-dialkyl-1,3-oxathiolanes can be effectively prepared from aldehydes or ketones and 2-mercaptoethanol, with triisopropylsilyl triflate as a catalyst. The reaction is over within minutes and, despite the fact that water is nor removed during the reaction, the yields of products are high.
SELECTIVE DESULFURIZATION OF 1,3-DITHIANES, -OXATHIOLANES AND -THIAZOLIDINES BY TRIBUTYLTIN HYDRIDE
Schmidt, K.,O'Neal, S.,Chan, T.C.,Alexis, C.P.,Uribe, J.M.,et al.
, p. 7301 - 7304 (2007/10/02)
Selective desulfurization of 2-alkyl-1,3-dithianes, -oxathiolanes, or -thiazolidines 1 with one equivalent of tri-n-butyltin hydride yields acyclic compounds R1R2CHX(CH2)nSSnBu3 (X=S,O,NH; n=2,3), (2) which can be destannylated to the corresponding mercaptans 3.
Electron Impact Induced Fragmentations of Some 2,2-disubstituted 1,3-oxathiolanes
Vainiotalo, Pirjo,Nevalainen, Vesa
, p. 467 - 472 (2007/10/02)
The electron impact induced fragmentations of nine 2,2-disubstituted 1,3-oxathiolanes have been studied by means of exact mass measurement and metastable ion analysis.The ring cleavage almost always takes place so that the C(2)-S and C(5)-O bonds are brok
BENZYNE-INDUCED FRAGMENTATION OF 1,3-OXATHIOLANES. A NOVEL METHOD FOR DEPROTECTION OF CARBONYL GROUPS, PREPARATION OF PHENYL VINYL SULFIDES, AND 1,2-CARBONYL TRANSPOSITION
Nakayama, Juzo,Sugiura, Hidetoshi,Shiotsuki, Atsuko,Hoshino, Masamatsu
, p. 2195 - 2198 (2007/10/02)
A variety of 1,3-oxathiolanes undergo a benzyne-induced fragmentation leading to phenyl vinyl sulfides and carbonyl compounds.The reaction developed here provides a novel method for deprotection of carbonyl compounds from 1,3-oxathiolanes, preparation of phenyl vinyl sulfides, and 1,2-carbonyl transposition.
Comparative radioprotective activity of various pentagonal compounds with two heteroatomes
Robbe,Fernandez,Dubief,et al.
, p. 235 - 243 (2007/10/02)
Various heterocyclic compounds with two heteroatomes were synthesized and their potential radioprotective activity was tested. This study shows the interest of phenylthiazolidines derivatives in chemical radioprotection.
The Reaction of 2-Ethoxy-1,3-oxathiolane with Carbonyl Compounds in the Presence of ZnCl2 or HgCl2
Tanimoto, Shigeo,Jo, Shigeo,Sugimoto, Toyonari,Okano, Masaya
, p. 3237 - 3238 (2007/10/02)
In the reaction of 2-ethoxy-1,3-oxathiolane with carbonyl compounds in the presence of ZnCl2 or HgCl2, it has been found that only the breaking of the endocyclic bond (C-O or C-S bond) occurs, while the breaking of the exocyclic C-O bond to give the 1,3-o
Elimination, Fragmentation, and Proton Transfer in 1,3-Dithianes and 1,3-Dithiolanes in the Gas Phase
Bartmess, John E.,Hays, Robert L.,Khatri, Hiralal N.,Misra, Raj N.,Wilson, Stephen R.
, p. 4746 - 4751 (2007/10/02)
The gas-phase negative ion-molecule chemistry of 1,3-dithianes and 1,3-dithiolanes differs considerably from the in solution.When treated with anionic bases, 1,3-dithiane undergoes successive elimination reactions giving thiolates, in competition with deprotonation at the 2-carbon, which is the sole solution phase reaction channel.The appearence of the various product ions with changing base strength agrees with their calculated thermochemical onset.The gase-phase acidity of 1,3-dithiane is measurable if the elimination reaction is blocked by gem-dimethyl substitution at the 5 carbon.For 1,3-dithiolane, no deprotonation product is pbserved; even at thermochemical treshold, cycloreversion to RCS2- and ethylene occurs.This competes with successive elimination to thiolates, as with the six-membered ring.The differences between the gas phase and solution reactivities are rationalized in terms of counterion effects.
