本工作介绍了在胺存在下,通过将Mn(III)与基于聚水杨醛的聚Schiff碱配体络合的胺氧化伯苄基或烯丙基醇,直接制备Schiff碱和肟化合物的新策略。席夫碱-锰(III)配合物)。作为一种新的对环境有益的方案,锰多相聚合物催化系统证明了使用分子氧在乙醇中乙醇的氧化前景广阔。通过2-羟基-5-氯甲基-苯甲醛的缩聚反应合成PSA,然后用2-氨基苯酚处理形成聚合物配体。通过分析方法以及GPC分析来研究PSA的平均分子量。FTIR,UV-Vis,1一步一步地表征了催化剂的形成1 H NMR,TGA,CHN和EDX分析。用ICP-OES仪器研究了金属离子的负载量以及催化剂的浸出量。该催化剂对伯和仲伯苄醇或仲烯丙基醇氧化为羰基化合物具有很高的收率,尤其是在温和,廉价和有效的方法中直接形成亚胺,可以成功地从反应混合物中回收该亚胺并重复使用几次而无需任何操作反应性显着降低。在这项工作中,评估了溶剂,温度
Experimental and theoretical study of antioxidative properties of some salicylaldehyde and vanillic Schiff bases
作者:Zorica D. Petrović、Jelena Đorović、Dušica Simijonović、Vladimir P. Petrović、Zoran Marković
DOI:10.1039/c5ra02134k
日期:——
A set of ten phenolic Schiff bases was evaluated for their antioxidative properties. Two of them, one salicylaldehyde and one vanillic, showed high activity. Parameters obtained by DFT supported the experimental findings.
Sobhana Devi, G.; Indrasenan, P., Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical
作者:Sobhana Devi, G.、Indrasenan, P.
DOI:——
日期:——
Studies on DNA binding, electrochemical activation, DNA photocleavage, and biopotency of N and O donor bidentate ligands with Cu(II), Co(II), and Zn(II)
作者:N. Raman、A. Selvan
DOI:10.1080/00958972.2010.551767
日期:2011.2.10
Three Schiff-base ligands, namely 2-(3,4-dimethoxybenzylideneamino)phenol (HL1), 2-(3-hydroxy-4-nitrobenzylidene-amino)phenol (HL2), and 2-(3-methoxy-4-hydroxy-benzylideneamino)phenol (HL3) and their Cu(II), Co(II), and Zn(II) complexes were synthesized and characterized by spectroanalytical techniques. The UV-Vis and magnetic moment data revealed square-planar Cu(II) and tetrahedral Co(II) and Zn(II). Conductivity data showed the non-electrolytic nature of the complexes. Absorption and viscometric titration as well as cyclic voltammetry studies revealed the complexes as avid binders of calf thymus (CT) DNA through intercalation. A profound effect of substituents on the Schiff base was observed on binding of complexes to CT-DNA and in cleavage of supercoiled pBR322 DNA. All the complexes showed DNA cleavage in the presence of mercaptopropionic acid (MPA) except HL1 complexes. The cleavage activity increased with longer exposure time of irradiation at 365 nm and higher complex concentration. The cleavage reactions in the presence of MPA involve hydroxyl radical. The synthesized Schiff bases and their metal complexes were also tested for antibacterial and antifungal activities. The metal complexes exhibited higher antibacterial and antifungal activities than the parent ligands and their biopotency is discussed.