- Novel sulphone-containing lithium ion battery electrolyte additive and preparation and application thereof
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The invention discloses a novel sulphone-containing lithium ion battery electrolyte additive and preparation and application thereof, and belongs to the field of electrolyte additives. The lithium ionbattery electrolyte additive is an organic sulfone comp
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Paragraph 0057-0062
(2020/06/17)
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- Studies on the double alkylation of 2,2-disubstituted-1,3- dithiacycloalkane-S-oxides: Synthesis of tertiary thiol derivatives
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Di-alkylation of 2,2-dimethyl-1,3-dithiacycloalkane-S-oxides has been achieved allowing the synthesis of two tertiary thiol centres. The diastereoisomers of the mono-alkylated products have been shown to react at different rates. The X-ray crystal structures of three substituted dithiane-S-oxides have been determined, and the conversion of the dialkylated products into cyclic disulfide derivatives of tertiary thiols (1,2-dithiolanes) has been achieved by treatment with acid. The Royal Society of Chemistry 2013.
- Fuchs, Christian,Edgar, Mark,Elsegood, Mark R. J.,Weaver, George W.
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p. 21911 - 21918
(2013/11/06)
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- Effect of β-alkylthioethyl substitution in 1,3-dithianes: Quasianchimeric assistance in photoinduced electron transfer?
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(Figure Presented) Nanosecond laser flash photolysis (LFP) experiments show that the rates of ET quenching of triplet benzophenone by 2-alkyldithianes significantly decrease with bulkier substitution. Introduction of sulfur at the β-position of the flexib
- Valiulin, Roman V.,Kutateladze, Andrei G.
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p. 6393 - 6396
(2008/12/22)
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- ACE-INHIBITORS HAVING ANTIOXIDANT AND NO-DONOR ACTIVITY
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Multifonctional ACE inhibitor compounds are provided, that combine ACE-inhibiting activity with capability to scavenge superoxide and other reactive oxygen species, and that may further function as nitric oxide donors. The compounds are useful for preventing or treating various disorders, including cardiovascular, and diabetes associated disorders.
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Page/Page column 51
(2010/02/07)
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- Transdithioacetalization of acetals, ketals, oximes, enamines and tosylhydrazones catalysed by natural kaolinitic clay
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Natural kaolinitic clay efficiently catalyses the transdithioacetalization of acetals, ketals, oximes, enamines and tosylhydrazones with ethane-1,2-dithiol and propane-1,3-dithiol to produce the corresponding dithiolanes in high yields.
- Jnaneshwara,Barhate,Sudalai,Deshpande,Wakharkar,Gajare,Shingare,Sukumar
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p. 965 - 968
(2007/10/03)
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- Synthesis of the Avocado Antifungal, (Z,Z)-2-Hydroxy-4-oxohenicosa-12,15-dien-1-yl Acetate
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A synthesis of the avocado antifungal, (Z,Z)-2-hydroxy-4-oxohenicosa-12,15-dien-1-yl acetate (la), confirms the structure of the compound as isolated from both avocado fruit and leaves, and provides the absolute configuration of the natural lipid.
- Bull, Steven D.,Carman, Raymond M.
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p. 1661 - 1672
(2007/10/02)
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- SELECTIVE DESULFURIZATION OF 1,3-DITHIANES, -OXATHIOLANES AND -THIAZOLIDINES BY TRIBUTYLTIN HYDRIDE
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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.
- Schmidt, K.,O'Neal, S.,Chan, T.C.,Alexis, C.P.,Uribe, J.M.,et al.
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p. 7301 - 7304
(2007/10/02)
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- Structure and Absolute Stereochemistry of Thioacetal Sulphoxides Obtained by Fungal Metabolism of 2 Alkyl-1,3-Dithianes
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Monosulphoxide metabolites of 2-methyl-, 2-t-butyl-, 2,2-dimethyl-, and 2-methyl-2-t-butyl-1,3-dithiane have been isolated after addition of the thioacetals to growing cultures of the fungi Aspergillus foetidus, Mortierella isabellina and a Helminthosporium species.The optical yields of the chiral monosulphoxide metabolites (0-72percent) were determined by n.m.r. analysis in (-)-phenyl- or 1-(+)-9-anthryl-2,2,2-trifluoroethanol-CDCl3 solvent mixtures.The signs of Cotton effects obtained from c.d. spectra have been used to assign the absolute stereochemistry of the chiral thioacetal sulphoxides.Optically pure samples 2,2-dimethyl-1,3-dithiane 1-oxide, cis-2-methyl-1,3-dithiane 1-oxide, and trans-2-methyl-1,3-dithiane 1-oxide, have been obtained by a chemical resolution method which provides confirmation of optical yields and absolute stereochemistry.The fungal metabolism results indicate that the mono-oxygenase enzymes can stereodifferentiate between prochiral (diastereotopic) Ione pairs on a sulphur atom and also between prochiral (enantiotopic) thioalkyl substituents on a carbon atom during the formation of monosulphoxides.
- Auret, Barbara J.,Boyd, Derek R.,Cassidy, E. Sally,Hamilton, Robert,Turley, Fiona,Drake, Alex F.
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p. 1547 - 1552
(2007/10/02)
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