627-50-9Relevant articles and documents
Destruction of chemical warfare agent simulants by air and moisture stable metal NHC complexes
Weetman, Catherine,Notman, Stuart,Arnold, Polly L.
supporting information, p. 2568 - 2574 (2018/02/28)
The cooperative effect of both NHC and metal centre has been found to destroy chemical warfare agent (CWA) simulants. Choice of both the metal and NHC is key to these transformations as simple, monodentate N-heterocyclic carbenes in combination with silver or vanadium can promote stoichiometric destruction, whilst bidentate, aryloxide-tethered NHC complexes of silver and alkali metals promote breakdown under mild heating. Iron-NHC complexes generated in situ are competent catalysts for the destruction of each of the three targetted CWA simulants.
Reaction Products and Process of 2-Chloroethyl Ethyl Sulfide in Microemulsion Media
Mei-Ling, Lei,Hai-Ling, Xi,Ming, Shen,Ling, Yuan,Shi-Tong, Han
, p. 387 - 393 (2014/03/21)
The reaction of 2-chloroethyl ethyl sulfide was investigated in several oil-in-water microemulsions. The reaction products were identified by GC/MS, NMR, and LC/MS, and the reaction process was monitored by measuring peak height of reaction products and 2-chloroethyl ethyl sulfide with time by 1H NMR spectroscopy. The result showed that 2-chloroethyl ethyl sulfide degraded to 2-hydroxyethyl ethyl sulfide, cyclic sulfonium ion, open chain sulfonium chloro ion and sulfonium hydroxyl ion, and the reaction proceeded via a cyclic sulfonium ion intermediate. Based on the NMR results, a pseudoternary model was established for the reaction process of 2-chloroethyl ethyl sulfide in microemulsion.
Heterogeneous photocatalytic degradation of disulfoton in aqueous TiO 2 suspensions: Parameter and reaction pathway investigations
Chen, Ming-Hung,Chen, Chiing-Chang,Wu, Ren-Jang,Lu, Chung-Shin
, p. 380 - 390 (2013/07/27)
The photocatalytic degradation of organophosphorus insecticide disulfoton is investigated by having titanium dioxide (TiO2) as a photocatalyst. About 99% of disulfoton is degraded after UV irradiation for 90 min. The effects of the solution pH, catalyst dosage, light intensity, and inorganic ions on the photocatalytic degradation of disulfoton are also investigated, as well as the reaction intermediates which are formed during the treatment. Eight intermediates have been identified and characterized through a mass spectra analysis, giving insight into the early steps of the degradation process. To the best of our knowledge, this is the first study reporting the degradation pathways of disulfoton. The results suggest that possible transformation pathways may involve in either direct electron or hole transfer to the organic substrate. The photodegradation of disulfoton by UV/TiO2 exhibits pseudo-first-order reaction kinetics and a reaction quantum yield of 0.267. The electrical energy consumption per order of magnitude for photocatalytic degradation of disulfoton is 85 kWh/(m3 order).
Synthesis, characterisation and reactivity of 2-functionalised vinylstannanes
Lébl,Hole?ek,Dymák,Steinborn
, p. 86 - 94 (2007/10/03)
The functionalised vinylstannanes of the type (E)/(Z)-Ph3SnCR′=CHYRn and (E)/(Z)-Ph3SnC(YRn)=CHR′ (YRn=NMe2, OEt, SMe, SEt; R′=Ph, Bu (n-butyl), Pe (n-pentyl), H) were prepared by non-catal
Flash vacuum pyrolysis of stabilised phosphorus ylides. Part 15. Generation of alkoxycarbonyl(sulfenyl)carbenes and their intramolecular insertion to give alkenyl sulfides
Aitken, R. Alan,Armstrong, Jill M.,Drysdale, Martin J.,Ross, Fiona C.,Ryan, Bruce M.
, p. 593 - 604 (2007/10/03)
A range of 18 alkoxycarbonyl sulfinyl phosphorus ylides 9 have been prepared and their behaviour upon flash vacuum pyrolysis (FVP) at 600 deg C examined. For R1 = H, Me and Et they lose Ph3PO and in some cases Ph3P to give mixtures of products including the alkenyl sulfides 10, the sulfides 11, the disulfides 12 and the thioesters 14. The alkenyl sulfides 10 most likely arise from intramolecular insertion of the alkoxycarbonyl sulfenyl carbenes resulting from loss off Ph3PO to produce β-lactones which then lose CO2 and this is supported by the results from 13C labelled ylides. Possible mechanisms for the formation of 11 and 14 are also presented and the feasibility of various steps has been examined by preparation and pyrolysis of the proposed intermediates. In contrast, pyrolysis of the ylides 9 where R1 = Ph and the tert-butoxycarbonyl ylides 30 leads mainly to complete fragmentation with loss of Ph3PO and benzyl alcohol or 2-methylpropan-2-ol and does not give any useful sulfur-containing products. Four alkoxy-carbonyl sulfonyl diazo compounds 33 have been prepared and in three cases they give the alkenyl sulfones 34 upon FVP at 400 deg C, probably by an intramolecular insertion and decarboxylation process analogous to the formation of 10 from 9. On the other hand the alkoxycarbonyl carbenes produced by FVP of the amino acid-derived diazo compounds 35 undergo alternative proocesses with no sign of β-lactone formation. Fully assigned 13C NMR data are presented for 13 of the ylides.
DIVINYL SULFIDE. XIV. DIVINYL SULFIDE AND SULFUR-CONTAINING HETEROCYCLES FROM VINYL HALIDES AND SODIUM SULFIDE
Trofimov, B. A.,Amosova, S. V.,Nosyreva, V. V.,Voronkov, M. G.
, p. 2123 - 2127 (2007/10/02)
The reaction of vinyl halides with hydrated sodium sulfide in the potassium hydroxide-DMSO (HMDTA) superbasic system leads to the formation of divinyl sulfide, 2,5-dimethyl-4-methylene-1,3-oxathiolane, 2,4,5-trimethyl-1,3-oxathiole, and 2-thiabicyclohept-3-ene and also dimethyl sulfide, vinyl methyl sulfide, and vinyl ethyl sulfide.The effect of the reaction conditions (temperature, solvent, time, and ratio of reagents) on the yield of the products and the selectivity of the process was studied.
The Lithium Diisopropylamide-induced Fragmentation of 1,3-Dithiolane Derivatives of Several Ketones Having α-Hydrogen
Ikehira, Hideyuki,Tanimoto, Shigeo,Oida, Tatsuo
, p. 2537 - 2538 (2007/10/02)
The reaction of 1,3-dithiolane derivatives of ketones having a-hydrogen with lithium diisopropylamide results in fragmentation to the corresponding thioketone followed by further conversion in a few steps to the other intermediate species which, on trapping with alkyl halide, leads to a vinylic sulfide and/or a sulfide bearing a secondary alkyl group.
DIVINYL SULFIDE VIII. REACTIONS OF ACETYLENE WITH HYDROGEN SULFIDE IN ALKALI-DIMETHYL SULFOXIDE AND ALKALI-HEXAMETHYLPHOSPHOROTRIAMIDE SYSTEMS
Trofimov, B. A.,Amosova, S. V.,Kryuchkov, V. V.,Vasil'tsov, A. M.
, p. 1839 - 1841 (2007/10/02)
The reaction of acetylene with hydrogen sulfide in the alkali-metal hydroxide-dimethyl sulfoxide system, leading to divinyl sulfide, was realized.A preparative method was developed for the production of ethyl hydrosulfide from acetylene and hydrogen sulfide in the alkali-metal hydroxide-hexamethylphosphorotriamide system.
