Synthesis and Characterization of Polymer and Polymer Complex with Some Transition Metal Ions
摘要:
p-페닐렌 디아민과 马来酸酐,아세틸 아세톤과 커플된 O-아미 노 페놀의 아조화합물으로 부터 폴리이미드가 만들어졌다.합성된 폴리이미드(PA)는 DMF용 매속에 다른 몰비율로 녹아있는 $Co^{+2},\;Cr^{+2},\;Ni^{+2},\;Cu^{+2},\;Zn^{+2},\;Cd^{+2}$ and $Fe^{+3}$ 를 포함하는 전이금속이온들의금 속염들과 함께 환류되었다.이 complex들은 원소분석과 열분석, IR, $^1H$ NMR으로 구조분석, 특성 연구되었다.
制备了由邻氨基苯酚与乙酰丙酮、马来酸酐酸和对苯二胺偶合而成的偶氮化合物衍生的聚酰胺。在二甲基甲酰胺(DMF)中以不同的摩尔比将制备的聚酰胺(PA)与过渡金属离子的金属盐(包括$Co^{+2},\;Cr^{+2},\;Ni^{+2},\;Cu^{+2},\;Zn^{+2},\;Cd^{+2}$和$Fe^{+3}$)进行回流。通过元素分析、热分析、红外光谱、1H NMR 光谱对这些复合物进行了表征和鉴定。数据显示,PA 配体通过捐赠 N=N 和 O-H 基团与金属离子配位。金属离子被配位的水分子和阴离子包围,从而形成了复合物的几何结构。不同温度下的热分析降解说明了水合水的重量损失和配合物的分解,直到金属氧化物的重量损失不变。
Synthesis and antimicrobial activity of pyrazolinones and pyrazoles having benzothiazole moiety
作者:Mohd. Amir、Sadique A. Javed、Mohd. Zaheen Hassan
DOI:10.1007/s00044-011-9642-0
日期:2012.7
A new class of 4-arylhydrazono-1-benzothiazolyl-3-methylpyrazolin-5-ones (3a-j) and 4-arylazo-1-benzothiazolyl-3,5-dimethylpyrazoles (4a-j) were designed as pharmacophore hybrids between pyrazolinone/pyrazole and benzothiazole moiety. The target molecules were efficiently synthesized by the cyclization of various oxobutyrates/pentane-2,4-dione derivatives with 6-chloro-2-hydrazinobenzothiazole in the presence of glacial acetic acid. The compounds were evaluated for their in vitro antimicrobial activity. Preliminary study of the structure-activity relationship revealed that electron-withdrawing groups in phenyl ring had a promising effect on the antimicrobial activity. Also, correlation study has been used to establish the relationships between the antibacterial activity and physicochemical parameter clogP.