Convenient preparation of unsymmetrical 2,5-disubstituted 1,3,4-oxadiazoles promoted by Dess–Martin reagent
摘要:
2,5-Disubstituted 1,3,4-oxadiazoles have been conveniently prepared by oxidative cyclization of N-acyl-N'-aryliden-hydrazines promoted by all excess or Dess-Martin periodinane under Mild conditions (23 examples, up to 92% isolated yields). (C) 2009 Elsevier Ltd. All rights reserved.
antimicrobial activity of substitutedhydrazides. To understand the relationship between physicochemical parameters and antimicrobial activity of substitutedhydrazide derivatives, QSAR investigation was performed by the development of one-target and multi-target models. The multi-target model was found to be effective in describing the antimicrobial activity of substitutedhydrazides in comparison to the
Thermo-Induced Fluorochromism in Two AIE Zinc Complexes: A Deep Insight into the Structure-Property Relationship
作者:Rosita Diana、Ugo Caruso、Francesco Silvio Gentile、Luigi Di Costanzo、Pellegrino Musto、Barbara Panunzi
DOI:10.3390/molecules27082551
日期:——
solid-state emissive coordination complexes offer a variety of fluorescence responses related to the dynamic of noncovalent metal-ligand coordination bonds. Relevant FC behaviour can result from the targeted choice of metal cation and ligands. Herein, we report the synthesis and characterization of two different colour emitters consisting of zinc complexes obtained from N,O bidentate ligands with different
表现出机械荧光变色或热荧光变色响应的固态发射器代表了用于新技术应用的智能工具的基础。在荧光变色 (FC) 材料中,固态发光配位配合物提供多种与非共价金属-配体配位键的动态相关的荧光响应。相关的 FC 行为可能来自金属阳离子和配体的目标选择。在这里,我们报告了两种不同颜色的发光体的合成和表征,这些发光体由从N、O获得的锌配合物组成。具有不同吸电子取代基的双齿配体。这两种复合物分别是蓝色和橙色固态荧光团,对热应力和机械应力高度敏感。这些发射器在退火处理之前和之后显示出非常不同的光致发光 (PL) 图案。通过 X 射线结构分析与热分析、红外 (IR) 光谱、PL 和 DFT 模拟相结合,我们对荧光变色响应中涉及的结构特征进行了全面分析。值得注意的是,我们能够将配合物的开关热荧光变色与锌配位核心的结构重排联系起来。
Alghamdi, Saad; Almehmadi, Mazen M.; Asif, Mohammad, Indian Journal of Heterocyclic Chemistry, 2022, vol. 32, # 1, p. 91 - 95
作者:Alghamdi, Saad、Almehmadi, Mazen M.、Asif, Mohammad
DOI:——
日期:——
Convenient preparation of unsymmetrical 2,5-disubstituted 1,3,4-oxadiazoles promoted by Dess–Martin reagent
作者:Cristian Dobrotă、Codruţa C. Paraschivescu、Ioana Dumitru、Mihaela Matache、Ion Baciu、Lavinia L. Ruţă
DOI:10.1016/j.tetlet.2009.02.054
日期:2009.4
2,5-Disubstituted 1,3,4-oxadiazoles have been conveniently prepared by oxidative cyclization of N-acyl-N'-aryliden-hydrazines promoted by all excess or Dess-Martin periodinane under Mild conditions (23 examples, up to 92% isolated yields). (C) 2009 Elsevier Ltd. All rights reserved.
Desai, Krunal G.; Desai, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2005, vol. 44, # 10, p. 2097 - 2101