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.
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.
A thiadiazole compounds and its synthetic method
-
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.
