Electrocatalytic Synthesis of Non-Symmetric Biphenols Mediated by Tri(p-bromophenyl)amine:Selective Oxidative Cross-Coupling of Different Phenols and Naphthols

An efficient electrochemical access to the non-symmetric biphenols using tri(p-bromophenyl)amine(TBPA)as a redox mediator has been developed.The electrochemical protocol features highly selective cross-coupling products in up to 83% yield,instead of forming homo-coupling ones.

二安替比林对溴苯基甲烷与Mn(Ⅳ)的显色反应的研究

在碱性介质中，加热时空气氧化ＭｎⅡ为ＭｎⅣ，在磷酸介质中，ＭｎⅣ与二安替比林对溴苯基甲烷生成橙色产物，最大吸收波长为４８０ｎｍ，摩尔吸光系数为２６７×１０４Ｌ·ｍｏｌ－１·ｃｍ－１，锰含量在０～４０μｇ／２５ｍｌ内符合比尔定律，用于测定茶叶中的ＭｎⅡ，操作简便、快速，结果满意。

N-(p-溴苯基)-2-(p-氯苯氧乙酰基)氨基脲的合成与表征

用 Ｎ － （ｐ － 溴苯基） 三氯乙酰胺与ｐ － 氯苯氧乙酰肼反应，合成了一种新的取代氨基脲， Ｎ － （ ｐ － 溴苯基） － ２ － （ ｐ － 氯苯氧乙酰基） 氨基脲，其结构经 Ｉ Ｒ 、１ Ｈ Ｎ Ｍ Ｒ 和元素分析证实。

Synthesis, Characterization and <i>In-Vitro</i>Antimicrobial Studies of M²⁺+ Complexes of <i>p</i>-Chlorophenyl-, <i>p</i>-Bromophenyl-Dithiocarbamates

This study reports the synthesis of metal complexes of mixed ligands p-Chlorophenyl-, p-Bromophenyl-dithiocarbamates. The spectral properties of the metal complexes [Zn(II), Cd(II), Hg(II), Cu(II), Co(II) and Ni(II)] were obtained using the FTIR and UV/Vis spectroscopic techniques. Their antibacterial studies revealed that these complexes as well as the ligands could serve as possible antibacterial agents against pathogens. Melting point and solubility measurements were also carried out. It was observed that these complexes were non-toxic, non-electrolytic and stable solids.

O-对甲氧基苯基-N,N-二苄基酪氨酸乙酯的合成

N,N-二苄基酪氨酸乙酯(2)与对溴苯甲醚(3)经偶联反应合成了O-对甲氧基苯基-N,N-二苄基酪氨酸乙酯,其结构经NMR,IR和MS表征。最佳反应条件为:210mmol,n(2)∶n(3)∶n(K3PO4)∶n(CuSO4.5H2O∶n(N,N-二甲基甘氨酸盐酸盐)=1.0∶1.3∶1.3∶0.2∶0.35,在DMF(50mL)中于100℃反应8h,产率54.7%,93.8%ee。