138432-74-3Relevant articles and documents
Environmental effects in nitroquinoline derivatives solutions: Solvatochromism, acid-base effect and ion-sensor investigation
dos Santos, Giovanny Carvalho,Rodrigues, Julia Lopes,Moreno, Vitor Fernandes,da Silva-Filho, Luiz Carlos
, (2021/03/22)
Since the first chemical fluorescent sensor reported in 1867, it has often been sought to find intelligent organic molecules that act as chemical sensors of high selectivity and sensitivity. In this process, the colorimetric and fluorescence methods have more advantages, as they are generally very sensitive, low cost, easily executable, versatile and of quick result. Colorimetric receptors containing several chromophores with azo-compounds have been developed since the discovery of chemosensors. Quinoline derivatives attract the interest of the scientific community in this regard. Thus, the present study using a facile synthesis aimed to help in development and behavioural study of new nitroquinolinic compounds against different solvents, pHs and organic/inorganic salts to observe potential recognition of anionic or cationic species. In four compounds a good non-linear fitting between the absorption intensity and amount of acid/base were established. The structural characterization of each of the prepared compounds was carried out with different spectroscopic and spectrometric techniques. UV–Vis and fluorescence measurements were also essential to confirm the binding/interaction process of ionic species and helped to find molecules with potential use in the identification of Co2+ and U2+ species, in addition to showing the sensitivity of species to pH and different solvents. The combination of theory and experiment is able to give a better understanding of the behavior in acidic, basic and neutral medium, DFT calculations were employed for this purpose.
Synthesis of 2,4-Diarylquinoline Derivatives via Chloranil-Promoted Oxidative Annulation and One-Pot Reaction
Cheng, Dongping,Pu, Yueqi,Shen, Jing,Xu, Xiaoliang,Yan, Jizhong,Yan, Xianhang
, p. 1833 - 1840 (2020/06/08)
An oxidative annulation for the synthesis of 2,4-diarylquinolines from o -allylanilines is disclosed that uses recyclable reagent Chloranil as the oxidant. The corresponding products are obtained in moderate to excellent yields. Furthermore, a one-pot access to 2,4-di aryl quinolines from easily available anilines and 1,3-diarylpropenes is described as a highly atom-efficient protocol that involves oxidative coupling, rearrangement, and oxidative annulation.
NbCl5 a multifunctional reagent for the synthesis of new halogenated aminoquinoline compounds through innovative one-pot reaction and the acidochromism effect
dos Santos, Giovanny Carvalho,Moreno, Vitor Fernandes,Oshiro, Paula Beatriz,da Silva-Filho, Luiz Carlos
supporting information, p. 6144 - 6149 (2018/09/14)
This paper describes an original one-pot way to synthesize nine new halogenated aminoquinoline derivatives using reactions conducted by niobium pentachloride. Subsequently, we describe an efficient and selective reduction reaction of nitroquinolines using niobium pentachloride and zinc, producing important compounds in the organic synthesis. The results showed that it is an important tool to synthesize these compounds, besides being time- and resources-saving and generating good yields. A quick study of acidochromism was performed.
