Synthesis, Characterization, and Mesomorphic Properties of New Pyridine Derivatives
作者:Ahipa T. N.
DOI:10.1002/open.201500158
日期:2015.12
Luminescent liquid crystals have received significant research interest due to their wide range of applications. Here, new pyridine derivatives were designed as liquid crystalline materials. They were successfully synthesized via appropriate synthetic routes, their structures confirmed by various spectral techniques, and finally characterized for their mesogenic, optical and optoelectronic properties
Synthesis and characterization of new homologous series of unsymmetrical liquid crystalline compounds based on chalcones and 3, 5-disubstituted isoxazoles
作者:SOWMYA P T、K M LOKANATHA RAI
DOI:10.1007/s12039-016-1205-y
日期:2017.1
Two homologous series of unsymmetrical alkylated chalcones and 3,5-diaryl isoxazoles, consisting of 20 members, with various n-alkyl bromides (n=2−7, 10, 12, 14, 16) have been synthesized and studied for their liquidcrystalline property. Simple strategy was employed to achieve the target materials. Flexibility in the synthesized molecules is provided by attaching straight alkoxy chains, where one
Substituted 2,4-diamino-5-benzylpyrimidines, their preparation and their
申请人:Saarstickstoff-Fatol GmbH Chem.-Pharm. Fabrik
公开号:US04912112A1
公开(公告)日:1990-03-27
Novel substituted 2,4-diamino-5-benzyl pyrimidines are described. The novel substances have antimicrobial activity and are particularly suitable for inhibiting the growth of mycobacteria. Combined with inhibitors such as diaminodiphenylsulphones, ring-substituted 4-aminodiphenylsulphones or ring and/or nitrogen-substituted diaminodiphenylsulphones, they have a marked synergistic activity.
Synthesis and Liquid Crystalline Properties of a New Homologous Series of 4,5-Disubstituted 2H-[1,2,3]-Triazoles via Azide-Chalcone Oxidative Cycloaddition Reaction
作者:P. T. Sowmya、K. M. Lokanatha Rai
DOI:10.1071/ch16540
日期:——
A new homologous series of 4,5-disubstituted 2H-[1,2,3]-triazole derivatives were synthesized from chalcones and sodium azide via oxidative cycloaddition reaction; CuI was used as catalyst. Flexibility in the synthesized molecules was provided by attaching straight alkoxy chains. The synthesized compounds were characterized by elemental analysis, and 1H NMR and 13C NMR and LC-MS spectroscopies . The
由查尔酮和叠氮化钠通过氧化环加成反应合成了一个新的4,5-二取代2 H- [1,2,3]-三唑同源系列化合物; CuI用作催化剂。通过连接直链烷氧基链可提供合成分子的柔韧性。通过元素分析,1 H NMR,13 C NMR和LC-MS光谱对合成的化合物进行表征。中间相的稳定性和范围随三唑上链长的增加而增加。通过差示扫描量热法(DSC)和配备有热台的偏振光学显微镜(POM)来确定熔点,转变温度和对映液晶形态。