140-90-9Relevant articles and documents
Supramolecular interactions in sodium N-(ethoxythioxomethyl)-β- alaninate-water (4/6) crystal and its application in synthesis of L-carnosine
Zhang, Shi-Jie,Xu, Feng,Yang, Wei-Ji,Hu, Wei-Xiao
, p. 1182 - 1189 (2012)
Compound sodium N-(ethoxythioxomethyl)-β-alaninate (sodium 3-(ethoxycarbonothioyl)propanoate) was synthesized and characterized by IR, 1HNMR, ESI-HRMS and single crystalX-ray diffraction. Single crystalX-ray diffraction analysis showed that the title compound crystallized in the triclinic space group P-1 with cell parameters a = 10.142 (2) A, b = 13.738 (3) A, c = 15.751 (3) A, α= 72.937 (2)°, β = 78.694 (2)°, γ = 89.999 (2)°, V = 2053.4 (7) A3, Dc = 1.464 g cm-3, Z = 2. In the extended structure of sodium N-(ethoxythioxomethyl)-β-alaninate-water (4/6), (NaL)4· 6H2O [L = CH3CH2OC(S)NHCH2CH 2COO], ligands (Ls) are stabilized by intermolecular O-H···O, N-H···O, C- H···O and weak O-H···S and C-H···S linkages, which further consolidate the crystal packing, making the ligand chains stacked along [0-1 1], and intramolecular O-H···S hydrogen bond is also observed. Each Na atom is surrounded with six O atoms, forming an octahedron and mutually bonded as tetramers. These tetramers are linked through O atom bridges from water molecules, extending as layers in the ab plane. In addition, synthesis of β-alanyl dipeptides was developed with particular focus on the preparation of L-carnosine. Springer Science+Business Media New York 2012.
Synthesis of symmetrical, substituted (alkane-,-diyl)(bis[3,3′-allyl dithioethers]) monomers for photoplastic polymer networks
Moorhoff, Cornelis M.,Cook, Wayne D.,Schiller, Tara,Braybrook, Carl,Thang, San H.
, p. 1165 - 1176 (2012)
Novel symmetrical (alkane-α,ω-diyl)(bis[3,3′-allyl dithioethers]) compounds and their ether analogues, have been synthesised from (alkane-α,ω-diyl)bis([2-{chloromethyl}allyl]sulfane) precursors, for use in crosslinked polymers which exhibit photoplastic behaviour. Facile synthesis and purification of these monomers was achieved if the alkane-α,ω-diyl moiety had at least one oxygen atom in this linker. The number of sulfur atoms in these monomers was varied from four to two to zero to produce monomers which can be used to evaluate their importance on the photoplasticity behaviour.
The synthesis of iron sulfide nanocrystals from tris(O-alkylxanthato) iron(III) complexes
Akhtar, Masood,Malik, Mohammad Azad,Tuna, Floriana,O'Brien, Paul
, p. 8766 - 8774 (2013)
Tris(O-alkylxanthato)iron(iii) complexes (alkyl = Me (1), Et (2), and iBu (3)) were used as single source precursors for the synthesis of iron sulfide nanocrystals by thermolysis in oleylamine, hexadecylamine and octadecylamine at 170 to 300 °C. The morphology of the crystallites was strongly affected by the reaction conditions as well as the type of precursor used.
Preparation method of xanthate
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Paragraph 0049; 0050; 0061; 0062; 0071; 0072, (2016/10/07)
The invention discloses a preparation method of xanthate. According to the preparation method, tetrahydrofuran is taken as the reaction medium, monohydric alcohol or dihydric alcohol and caustic alkali carry out reactions at a temperature of 0 to 30 DEG C, finally desolvation is performed to obtain high purity xanthate, and the yield is high. The obtained xanthate has the advantages of little odor, higher purity, and higher yield, and is especially suitable for being used to prepare high grade xanthate with a carbon chain having a carbon number of 6 or more, ethyl xanthate, and dixanthate.
A thiadiazole compounds and its synthetic method
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Paragraph 0032; 0039; 0040; 0041; 0059; 0066; 0067; 0068, (2019/02/02)
The invention relates to a thiadiazole compound and a synthesis method thereof. Alkoxy sodium xanthate is synthesized from an alcohol compound, sodium hydroxide and carbon disulfide, alkoxy thiocarbonyl hydrazine is synthesized from alkoxy sodium xanthate and hydrazine hydrate, and N'-alkoxyl thiocarbonyl-N-2-chloroacetylhydrazide is synthesized from alkoxy thiocarbonyl hydrazine and 2-chloroacetyl chloride; 2-alkoxyl-5-chloromethyl-1,3,4-thiadiazole is synthesized through cyclization of the generated hydrazide compound under an action of concentrated sulfuric acid and then undergoes a reaction with 4,5-dichloro-3(2H)pyridazinone, and the generated intermediate undergoes a substitution reaction with aliphatic amine or cyclic aliphatic amine or propyl sulfhydrate under catalysis of an alkaline reagent to synthesize a bishydrazide derivative. Compared with the prior art, the thiadiazole compound has the advantages of simple technological process and wide application range, is suitable for use in prevention and treatment of sanitary pests such as flies, mosquitoes, fleas and the like and prevention and treatment of other agricultural pests such as rice water weevils, beet armyworm, plutella xylostella, armyworm and the like, and is an insecticide having an application prospect.
Versatile synthesis of α-substituted taurines from nitroolefins
Xu, Chuanxiang,Xu, Jiaxi
body text, p. 195 - 203 (2012/04/10)
A series of 1-substituted and 1,1-disubstituted taurines were synthesized from nitroolefins via the Michael addition with sodium ethylxanthate, oxidation with performic acid, and reduction with hydrogen in the presence of palladium on carbon powder. The current route is a versatile and salt-free method for synthesis of both aliphatic and aromatic 1-substituted and 1,1-disubstituted taurines. Springer-Verlag 2010.
TOUGHENED VINYL ESTER RESINS
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Page/Page column 51, (2010/02/13)
A vinyl ester resin is derived from the reaction of an unsaturated acid with an epoxy terminated polymer made from a dithio or a trithio initiator, and optionally from an epoxy resin. The vinyl ester resin can be blended with a miscible toughener and a diluent to provide a time stable system and subsequently crosslink to provide a composition with improved toughening properties.
S-(alpha, alpha'-disubstituted-alpha' '-acetic acid) substituted dithiocarbonate derivatives for controlled radical polymerizations, process and polymers made therefrom
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, (2008/06/13)
Dithiocarbonate derivatives are disclosed, along with a process for preparing the same. The dithiocarbonate compounds can be utilized as initators, chain transfer agents and/or terminators in controlled free radical polymerizations. The dithiocarbonates can be used to produce polymers having narrow molecular weight distribution. Advantageously, the compounds of the present invention can also introduce functional groups into the resulting polymers. The dithiocarbonate compounds have low odor and are substantially colorless.
Mixed ligand zinc(II) and cadmium(II) complexes with alkyl xanthates and 2,2′-bipyridyl
Hussain Reddy,Sambasiva Reddy
, p. 1118 - 1120 (2007/10/03)
Mixed ligand complexes of zinc(II) and cadmium(II) with alkyl xanthates as primary ligands and 2,2′-bipyridyl (bpy) as secondary ligand have been synthesized and characterized by elemental analysis, infrared and 1H NMR spectral data. Infrared spectra reveal that xanthates act as uni- and bidentate ligands in zinc and cadmium complexes respectively. Tetrahedral geometry is assigned for zinc(II) complexes while an octahedral structure for cadmium(II) complexes.
15N-Multilabeled Adenine and Guanine Nucleosides. Syntheses of [1,3,NH2-15N3]- and [2-13C-1,3,NH2-15N3]-Labeled Adenosine, Guanosine, 2′-Deoxyadenosine, and 2′-Deoxyguanosine
Abad, Jose-Luis,Gaffney, Barbara L.,Jones, Roger A.
, p. 6575 - 6582 (2007/10/03)
We report a high-yield route to the following specifically 15N- and 13C-multilabeled nucleosides: [1,3,NH2-15N3]- and [2-13C-1,3,NH2-15N3]-adenosine; [1,3,NH2-15N3]- and [2-13C-1,3,NH2-15N3]-guanosine; [1,3,NH2-15N3]- and [2-13C-1,3,NH2-15N 3]-2′-deoxyadenosine; [1,3,NH2-15N3]- and [2-13C-1,3,-NH2-15N 3]-2′-deoxyguanosine. In each set, the 13C2 atom functions as a "tag" that allows the 15N1 and 15N3 atoms to be unambiguously differentiated from the untagged versions in 15N NMR of RNA or DNA fragments. The key intermediate of this synthetic strategy for both the adenine and guanine nucleosides is [NH2,CONH2-15N 2]-5-amino-4-iimdazolecarboxamide. The [2-13C]-label is added through a ring closure using [13C]-sodium ethyl xanthate (NaS13CSOEt). Enzymatic transglycosylation of either multilabeled 6-chloropurine or multilabeled 2-mercaptohypoxanthine and a final reaction with 15NH3 give the adenine and guanine nucleosides. This is the first report of a [3-15N]-labeled guanine nucleoside.
