糠醛双Schiff碱及其铜配合物的合成与抗菌活性研究

合成了糠醛双Schiff碱N,N′-双(2-呋喃甲醛亚胺基乙基)-2,6-吡啶二甲酰胺及其铜配合物,通过波谱分析对其结构进行了表征,测定了Schiff碱及其铜配合物对大肠杆菌、金黄色葡萄球菌和枯草芽孢杆菌的抗菌活性和最低抑菌浓度。结果表明,Schiff碱及其铜配合物均有一定的抗菌活性,且Schiff碱铜配合物的抗菌活性更好,两者最低抑菌浓度均在0.5~1.0 g.L-1之间。     

2-乙酰基吡啶缩异烟酰腙稀土配合物合成、表征与荧光性能研究

采用热乙醇溶液为溶剂,合成了一种酰腙类Schiff碱-2-乙酰基吡啶缩异烟酰腙,并制备其Ce(III)和Nd(III)两种稀土配合物。结果表明,该法合成的Schiff碱配合物具有较高的热稳定性,当在2-乙酰基吡啶缩异烟酰腙的溶液中加入氯化铝之后,则呈现很强的紫色荧光,可以作为潜在的发光材料。     

2-乙酰基吡啶缩异烟酰腙稀土配合物合成、表征与荧光性能研究

采用热乙醇溶液为溶剂,合成了一种酰腙类Schiff碱-2-乙酰基吡啶缩异烟酰腙,并制备其Ce(III)和Nd(III)两种稀土配合物。结果表明,该法合成的Schiff碱配合物具有较高的热稳定性,当在2-乙酰基吡啶缩异烟酰腙的溶液中加入氯化铝之后,则呈现很强的紫色荧光,可以作为潜在的发光材料。     

2-氨基-5-氯吡啶水杨醛Schiff碱及其配合物的固相合成研究

以2-氨基-5-氯吡啶、水杨醛为原料在室温条件下进行研磨,合成了2-氨基-5-氯吡啶水杨醛Schiff碱(HL=C12H9ClON2),然后加入过渡金属盐氯化镍(氯化钴、醋酸铜)继续研磨制得2-氨基-5-氯吡啶水杨醛Schiff碱金属配合物,用元素分析、IR、UV、1HNMR、荧光光谱、电导率等手段对配合物的结构进行了表征,确定了配合物的组成分别为NiL2、CoL2、CuL2。     

歧化松香胺Schiff碱-铜配合物催化烯烃氧化反应的研究

以H2O2为氧源,研究了歧化松香胺Schiff碱-铜配合物催化枞酸、环己烯、异戊二烯的氧化反应,通过分析反应产物的GC-MS谱图,评价氧化反应的结果以及产率.结果表明,歧化松香胺Schiff碱-铜配合物可以较好地催化枞酸、环己烯、异戊二烯的氧化反应.     

2-吡啶甲醛的合成

2-甲基吡啶经N-氧化、重排、水解得2-吡啶甲醇．该中间体再用TEMPO—NaClO-NaBr氧化体系氧化制备2-吡啶甲醛。     

2-羟基-1-萘醛缩乙二胺Schiff碱及其稀土金属配合物的合成和表征

以2-羟基-1-萘醛和乙二胺为原料,乙醇为溶剂,加热回流制备2-羟基-1-萘醛缩乙二胺Schiff碱配体,然后分别与铟（Ⅲ）、钍（Ⅳ）的盐反应,生成相应的配合物,并对2-羟基-1-萘醛缩乙二胺Schiff碱及其金属配合物的抗菌活性进行探究。结果表明,配合物对枯草杆菌、大肠杆菌、绿脓杆菌和金黄色葡萄球菌的抑制作用较配体更强。     

N-3-羧基水杨醛缩乙二胺Schiff碱单核镍配合物的微波辅助合成

以3-羧基水杨醛和乙二胺为原料,采用微波辐射辅助液相合成法合成了N-3-羧基水杨醛缩乙二胺配体;然后将该配体与四水醋酸镍络合,合成了一种新型的Schiff碱单核镍配合物.通过元素分析、红外光谱、质谱时Schiff碱配体及其镍配合物进行了表征.     

2,6-二乙酰基吡啶缩合苯磺酰肼铕配合物的合成及性质研究

合成了2,6-二乙酰基吡啶-苯磺酰肼Schiff碱(DAPBSH)及其与稀土Eu3+的配合物,采用元素分析、红外、核磁等表征手段确定了配体的结构,采用元素分析及热分析初步确定了配合物的结构Eu(DAPBSH)2(NO3)3·2H2O并对配合物的紫外、荧光性质做了初步研究。     

水杨醛双Schiff碱与其铜配合物的合成与抗菌活性研究

文章首先合成了水杨醛双SchiffN,N’-双（2-水杨醛亚胺基乙基）-2,6-吡啶二甲酰胺（Iia）,并以它为配体合成了铜配合物,通过波谱分析对其结构进行了表征。并采用固体培养基抑菌圈法和液体培养基比浊法对了Schiff碱及其铜配合物进行抗菌活性的测定。结果表明,水杨醛双Schiff碱及其铜配合物对大肠杆菌和金黄色葡萄球菌均有抗菌活性,并且水杨醛双Schiff碱铜配合物的抗菌活性比水杨醛双Schiff碱的抗菌活性强。     

杂环化合物席夫碱及其配合物的研究进展

概述了杂环化合物席夫碱及其配合物的研究现状,重点介绍了杂环化合物席夫碱及其配合物的合成方法及在生物医药领域中的应用,并对其发展趋势进行了展望。     

Schiff bases and their complexes: Recent progress in thermal analysis

Schiff bases are versatile compounds synthesized from the condensation of primary amino compounds with aldehydes or ketones. The high thermal of many Schiff base and their complexes were useful attributes for their application as catalysts in reactions involving at high temperatures. This thermal behavior of Schiff bases and their complexes was evaluated by TGA/DTG and DTA curves with mass losses related to dehydration and decomposition. This review summarizes the developments in the last decade for thermal analysis of Schiff bases. Therefore, synthesis of Schiff bases and their complexes are reviewed.     

Oxidation of 2,6-di-tert-butylphenols to Diphenoquinones Catalysed by Schiff Base-Cu(II) Systems Immobilized on Polymer Support

Benzoquinone, diphenoquinones and its derivatives are important intermediates for industrial synthesis of a wide variety of special chemicals, such as pharmaceuticals, dyes and agricultural chemicals. The useful catalyst were obtained by aminolysis of vinylbenzyl chloride/divinylbenzene copolymer with ethylenediamine (1) or urotropine (2) and then modification by salicylaldehyde (1A, 2A) or picolinaldehyde (1B, 2B). The catalytic activity of Cu(II) complexes with Schiff base immobilized on the synthesized supports were tested in the oxidation reaction of 2,6-di-tert-butylphenol (DTBP) to diphenoquinone (PQ) with tert-butylhydroperoxide. The best oxidation degree of DTBP (60-70%) and the selectivity towards PQ (80%) is revealed by Cu(II) complexes with long Schiff base ligands derived from salicylaldimine (1A), which have CuL structure (EPR measurement).     

希夫碱金属配合物应用进展

希夫碱基团通过碳-氮双键上的氮原子和相邻的具有孤对电子的氧、硫、磷原子与金属原子配对可形成希夫碱配合物。对钴(Ⅱ)、锰{(Ⅱ)(、Ⅲ)}、铜(Ⅱ)三类希夫碱金属配合物的结构式、合成方法及在医药、酶、催化等领域的应用进行了综述;对锡(Ⅱ)、铅(Ⅱ)、钒(Ⅳ)、钼(Ⅵ)、银(Ⅰ)等希夫碱金属配合物的应用也做了简要概述。     

含噻唑环席夫碱及其配合物的合成与性能研究进展

噻唑环具有良好的热稳定性和耐酸、碱及氧化等化学稳定性,而席夫碱拥有优良的配位能力,因而含噻唑环的席夫碱及其配合物已成为有机功能材料的研究热点之一.阐述了含噻唑环席夫碱的合成工艺及其在化学荧光、生物抑菌、模拟酶催化和电磁性能等方面的研究进展,最后对噻唑环席夫碱今后的研究方向作了简要的展望.     

Novel Poly(Styrene) Attached Schiff Bases for Uptake Mn(II) and Ni(II) Ions and as Antimicrobial Agent against Micrococcus luteus

In this study, three novel poly(styrene) attached Schiff bases (AMP–SB) were synthesized from condensation reaction of (aminomethyl)polystyrene with 2-hydroxy-5-bromobenzaldehyde, 2-hydroxy-5-methylbenzaldehyde and 2-hydroxy-5-chlorobenzaldehyde for uptake from solutions containing Mn(II) and Ni(II) ions and as antimicrobial agent against Micrococcus luteus. Furthermore coordination polymers were synthesized including Mn(II) and Ni(II) ions for understand to geometric structure of uptake ions. Polymers attached Schiff bases and coordination polymers were characterized by means of elemental analyses, magnetic measurements, FTIR, UV-GB, TG/DTA and ¹H-NMR. The Ni(II) and Mn(II) contents in the metal-containing polymer complexes were determined by the ICP-MS technique. Antibacterial activities of the polymers attached Schiff bases and their complexes were studied by the well-diffusion method against M. luteus (ATCC-9341).     

Copper (II) Acylhydrazinates. Their Synthesis and Characterization

Acylhydrazine derived furanyl and thienyl Schiff bases and their Cu(II) complexes have been prepared and characterized on the basis of their physical, spectral and analytical data. The preferred enolic form of the Schiff base function as a tetradentate ligand during coordination to the metal ion yielding a square planar complex. The Schiff bases and their complexes with different anions were tested for their antibacterial activity against bacterial species such as Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa andKlebsiella pneumonae.     

Synthesis,Characterization and Biological Evaluation of Transition Metal Complexes Derived from N,S Bidentate Ligands

Two bidentate NS ligands were synthesized by the condensation reaction of S-2-methylbenzyldithiocarbazate (S2MBDTC) with 2-methoxybenzaldehyde (2MB) and 3-methoxybenzaldehyde (3MB). The ligands were reacted separately with acetates of Cu(II), Ni(II) and Zn(II) yielding 1:2 (metal:ligand) complexes. The metal complexes formed were expected to have a general formula of [M(NS)₂] where M = Cu²⁺, Ni²⁺, and Zn²⁺. These compounds were characterized by elemental analysis, molar conductivity, magnetic susceptibility and various spectroscopic techniques. The magnetic susceptibility measurements and spectral results supported the predicted coordination geometry in which the Schiff bases behaved as bidentate NS donor ligands coordinating via the azomethine nitrogen and thiolate sulfur. The molecular structures of the isomeric S2M2MBH (1) and S2M3MBH (2) were established by X-ray crystallography to have very similar l-shaped structures. The Schiff bases and their metal complexes were evaluated for their biological activities against estrogen receptor-positive (MCF-7) and estrogen receptor-negative (MDA-MB-231) breast cancer cell lines. Only the Cu(II) complexes showed marked cytotoxicity against the cancer cell lines. Both Schiff bases and other metal complexes were found to be inactive. In concordance with the cytotoxicity studies, the DNA binding studies indicated that Cu(II) complexes have a strong DNA binding affinity.     

Schiff碱及其配合物的应用进展

综述了Schiff碱及其配合物在催化剂领域、医药和农药领域、缓蚀剂领域、新材料领域、有机合成领域、分析化学领域的应用，为进一步研究、开发和利用Schiff碱奠定基础。     

Synthesis, Characterization and Biological Properties of Anions of Bivalent Transition Metal [Co(II) and Ni(II)] Complexes With Acylhydrazine Derived ONO Donor Schiff Bases

Some acylhydrazine derived ONO donor Schiff bases and their Co(II) and Ni(II) complexes have been prepared having the same metal ion (cation) but different anions. These synthesized metal(II) complexes have been characterized on the basis of their elemental analyses, magnetic moment, molar conductance, and IR and electronic spectral data. All of the Schiff base ligands function as tridentates and the deprotonated enolic form is preferred for coordination. In order to evaluate the effect of anions on the bactericidal activity, these synthesized complexes, in comparison to the uncomplexed Schiff bases have been screened against bacterial species., Escherichia coli, Staphylococcus aureus and Pseudomonas aeruginosa and the results are reported.