Synthesis, spectroscopic and biological studies of diorganotin(IV) and triorganotin(IV) derivatives of albendazole, ofloxacin and 3-carboxypropyldisulfide
摘要:
Diorganotin(IV) and triorganotin(IV) derivatives of the types R(2)SnA (R=n-Bu and n-octyl) and (R3Sn)(2)A (R = n-Bu), where A is the anion of albendazole {methyl[(5-propylsulfanyl-3H-benzoimidazol-2-yl)amino]formate}, ofloxacin {(RS)-7-fluoro-2-methyl-6-(4methylpiperazin-1-yl)-10-oxo-4-oxa-1-azatricyclo[7.3.1.0(5,13)] trideca-5(13),6,8,11-tetraene-11-carboxylicacid} and 3-carboxypropyldisulfide, have been synthesized. The complexes 1-9 obtained were characterized by elemental analysis as well as infrared (Fourier transform infrared), nuclear magnetic resonance (H-1, C-13 and Sn-119 NMR) and ultraviolet spectroscopy. On the basis of these spectroscopic studies it was proposed that diorganotin complexes of 3-carboxypropyldisulfide having 1: 1 stoichiometry and complexes of albendazole and ofloxacin having 1: 2 stoichiometry show tetrahedral geometry around the tin atom with monodentate behavior of the carboxylate group in ofloxacin and 3-carboxypropyldisulfide. Triorganotin complexes of 3-carboxypropyldisulfide having 1: 1 stoichiometry and complexes of ofloxacin and albendazole having 1: 2 stoichiometry show trigonal bipyramidal geometry. The ligand molecule is bound to the Sn atom through carboxyl oxygen atoms in ofloxacin and 3-carboxypropyldisulfide, and to the nitrogen atom in albendazole. The biological activity of the synthesized complexes 4, 5 and 6 has been screened against Candida albicans
Mixture for recovery utilization or transfer of carbon dioxide
申请人:Miyake Nobuhisa
公开号:US08362289B2
公开(公告)日:2013-01-29
It is an object of the present invention to provide a mixture for recovery utilization or transfer of carbon dioxide gas. According to the present invention, disclosed is a mixture containing carbon dioxide and an alkyltin alkoxide composition containing carbon dioxide complex of an alkyltin alkoxide, the mixture having a composition with a specified ratio.
An object of the present invention is to provide a process that enables isocyanate to be produced stably over a long period of time and at high yield without encountering problems of the prior art during production of isocyanate without using phosgene. The present invention discloses a process for producing an isocyanate by subjecting a carbamic acid ester to a thermal decomposition reaction, including the steps of: recovering a low boiling point component in a form of a gaseous phase component from a thermal decomposition reaction vessel in which the thermal decomposition reaction is carried out; recovering a liquid phase component containing a carbamic acid ester from a bottom of the thermal decomposition reaction vessel; and supplying all or a portion of the liquid phase component to an upper portion of the thermal decomposition reaction vessel.
2-Phenylbutyric acid based organotin(IV) carboxylates; synthesis, spectroscopic characterization, antibacterial action against plant pathogens and in vitro hemolysis
Abstract 2-Phenylbutyric acidbased four organotin (IV) complexes were prepared with general formula R3SnL/R2SnL2, where R = methyl (1), butyl (2), octyl (3) and L = 2-phenylbutyrate. The 2-phenyl butyrate coordinates to the tin atom via carboxylate group as evidenced by FT-IR and 13C NMR data. Moreover, skew-trapezoidal bipyramidal geometry was observed for complex 3 by single crystal X-ray diffraction data
摘要 制备了基于 2-苯基丁酸的四种有机锡 (IV) 配合物,通式为 R3SnL/R2SnL2,其中 R = 甲基 (1)、丁基 (2)、辛基 (3) 和 L = 2-苯基丁酸酯。FT-IR 和 13C NMR 数据证明,2-苯基丁酸酯通过羧酸根与锡原子配位。此外,通过单晶 X 射线衍射数据观察到配合物 3 的斜梯形双锥几何。评估了制备的复合物对四种植物病原体的抗菌作用,即黄单胞菌、欧文氏菌、青枯病菌和米黄单胞菌。结果表明,过滤后的复合物具有很高的生物作用。使用具有不同浓度复合物的新鲜人红细胞 (RBC) 进行体外溶血,数据显示这些复合物可用于进一步分析,并可用作潜在药物。通过使用表明嵌入结合模式的紫外-可见光谱研究了复合物的 DNA 结合潜力。进行电导测量以探索复合物与十六烷基三甲基溴化铵 (CTAB) 的相互作用以及临界胶束浓度 (CMC) 的较高值,而负的胶束化吉布斯自由能 (ΔGm)
Synthesis, Characterization, and Biological Activity of Organotin(IV) Complexes with Schiff Bases
作者:S. Nazneen、S. Ali、S. Shahzadi、S. Shujah
DOI:10.1134/s1070363217120404
日期:2017.12
The synthesized Schiff base ligands H2L1, N,N'-bis(2-hydroxybenzylidene)1,2-diaminobenzene, and H2L2, N,N'-bis(2-hydroxybenzylidene)hydrazine, reacted with Alk2SnCl2 to give organotin(IV) complexes 1–10. The products were characterized by elemental analysis, FTIR, 1H and 13C NMR, and mass spectrometry. All organotin(IV) derivatives with [O,N,O] donor ligands retained their 5-coordinated geometry in
合成的席夫碱配体H 2 L 1,N,N'-双(2-羟基苄叉)1,2-二氨基苯和H 2 L 2,N,N'-双(2-羟基苄叉)肼与Alk 2反应SnCl 2产生有机锡(IV)配合物1-10。产品通过元素分析,FTIR,1 H和13进行表征1 H NMR和质谱。具有[O,N,O]供体配体的所有有机锡(IV)衍生物在固态和溶液中均保持其5-配位的几何形状。大多数合成的复合物表现出显着的抗菌活性。还通过使用盐水虾(Artemia salina)致死性生物测定法测试了细胞毒性。
Synthesis and characterization of some new di- and triorganotin(IV) complexes of Schiff base derived from o-vanillin and acetazolamide using microwaves
Abstract The synthesis, by green methodology using microwaves, of the novel Schiff base LH derived from o-vanillin and acetazolamide and of the corresponding organotin derivatives R2SnL2 (1, R=n-Bu; 2, R=n-Oct) and n-Bu3SnL (3) is reported. The compounds are characterized by elemental analyses; 1H, 13C, and 119Sn NMR; IR; and UV-vis spectroscopy.