- Syntheses, structures, and electrochemical studies of N,N′-bis(alkylthiocarbamate)butane-2,3-diimine Cu(II) complexes as pendent alkoxy derivatives of Cu(ATSM)
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A series of N2S2-Cu(II) complexes based on N,N′-bis(alkylthiocarbamate)butane-2,3-diimine ligands have been synthesized and characterized by spectroscopic, electrochemical, and single crystal X-ray diffraction methods. This class of ligands contains a conjugated N2S2chelate framework with a non-coordinating, terminal alkoxy (–OR) group. Ligands and Cu(II) complexes were investigated for R = Me, Et,nPr,iPr, and octyl. Additionally, N,N′-bis(ethylthiocarbamate)hexane-3,4-diimine and its Cu(II) complex were analyzed. Single crystal X-ray diffraction studies on all six Cu(II) complexes confirm a square planar Cu(II) environment with no significant changes in the core structure as a function of R. Spectroscopic studies are consistent with a similar electronic environment in all complexes. However, electrochemical investigations reveal significant shifts in the CuII/Iand CuIII/IIreduction potentials throughout the series. The complexes are analogues of the well-known bis(thiosemicarbazone) Cu(II) which contain a similar donor core with terminal, non-coordinating amines. Substitution of the terminal amines of bis(thiosemicarbazones) with the alkoxy groups of N,N′-bis(alkylthiocarbamate)butane-2,3-diimines allows tuning of redox potentials with minimal changes in the physical and electronic structure.
- Vishnosky, Nicholas S.,Mashuta, Mark S.,Buchanan, Robert M.,Grapperhaus, Craig A.
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- A thiadiazole compounds and its synthetic method
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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.
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Paragraph 0032; 0042; 0043; 0044; 0059; 0069; 0070; 0071
(2019/02/02)
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- Synthesis and biological activities of novel 1,3,4-thiadiazole-containing pyrazole oxime derivatives
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A new library of 1,3,4-thiadiazole-containing pyrazole oximes was designed and synthesized. Their acaricidal and insecticidal activities were evaluated. Bioassay results indicated that some target compounds exhibited good acaricidal and insecticidal properties. Especially, compound 8m had 80% acaricidal activity against Tetranychus cinnabarinus at the concentration of 50?μg/mL, compound 8f displayed 100% insecticidal activities against Aphis craccivora at the concentration of 50?μg/mL, compounds 8r and 8w showed 100% insecticidal activities against Plutella xylostella at the concentration of 50?μg/mL. Furthermore, compounds 8r (LC50?=?19.61?μg/mL) and 8w (LC50?=?9.78?μg/mL) possessed comparable or even better insecticidal activities than the control Pyridalyl (LC50?=?17.40?μg/mL) against P. xylostella.
- Dai, Hong,Li, Gang,Chen, Jia,Shi, Yujun,Ge, Shushan,Fan, Chongguang,He, Haibing
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p. 3818 - 3821
(2016/07/21)
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- Substituted 5-Phenyl-3,6-Dihydro-2-Oxo-6H-1,3,4-Thiadiazines
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Compounds of the formula (I), in which R1, R2, m, Q and B have the meanings indicated in claim 1, are inhibitors of tyrosine kinases, in particular Met kinase, and can be employed, inter alia, for the treatment of tumours.
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Page/Page column 18
(2009/01/24)
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- Ethoxythiosemicarbazide - A New Titrant in Amperometric Analysis
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Ethoxythiosemicarbazide (ETSC) has been used for the amperometric determination of cations.The polarogram and operative conditions for its use as a titrant have been described.
- Deshmukh, G. S.,Kulkarni, A. G.
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p. 171 - 172
(2007/10/02)
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- Electron Deficient Heteroaromatic Ammonioamidates. Part 25. N-(Quinazolin-3-io)amidates. Part 12. The Synthesis of N-(6,7-Dimethoxy-2-methylquinazolin-3-io)ethoxythioformamidate and of 2-(3,4-Dimethoxyphenyl)-8,9-dimethoxy-5-methyl-10bH--thiadiazol
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The synthesis of N-(6,7-dimethoxy-2-methylquinazolin-3-io)ethoxythioformamidate (7a) has been carried out starting with the thioacylhydrazone (5a) via cyclization of the acetylamino thioacylhydrazone (6a).An analogous attempt to synthesize the related thi
- Lempert-Sreter, Magda,Lempert, Karoly,Moeller, Joergen
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p. 2011 - 2015
(2007/10/02)
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