110684-48-5Relevant academic research and scientific papers
2,5-Bis(azulenyl)pyrrolo[3,2-b]pyrroles-the key influence of the linkage position on the linear and nonlinear optical properties
Poronik, Yevgen M.,Mazur, Leszek M.,Samo?, Marek,Jacquemin, Denis,Gryko, Daniel T.
, p. 2620 - 2628 (2017)
The first route towards pyrrolo[3,2-b]pyrroles containing two azulene moieties at positions 2 and 5 was developed. The key step of this approach is the three-step transformation of pyridine scaffolds into azulene via sequential N-arylation followed by ring-opening and a reaction with cyclopentadiene. The resulting quadrupolar acceptor-donor-acceptor compounds possess interesting optical properties such as bathochromically shifted absorption with the magnitude of the red-shift strongly dependent on the linkage position. Two-photon absorption of these functional dyes is markedly different from that of previously described pyrrolo[3,2-b]pyrroles. The experimental optical spectra were rationalized using time-dependent density functional theory calculations of both the linear and nonlinear optical properties.
Fluorodynamers Displaying Tunable Fluorescence on Constitutional Exchanges in Solution and at Solid Film–Solution Interface
Si, Mingran,Zhu, Weijia,Zhang, Yan,Barboiu, Mihail,Chen, Jinghua
supporting information, p. 10191 - 10194 (2020/07/13)
Dynamic covalent polymers—dynamers—are adaptive materials that offer timely variant adaptive macroscopic organization across extended scales. In the current study, imine exchange reactions and fluorescence transfer can occur at the interfaces between vari
Sulfonic acid supported on hydroxyapatite-encapsulated-γ-Fe 2O3 nanocrystallites as a magnetically separable catalyst for one-pot reductive amination of carbonyl compounds
Deng, Jia,Mo, Li-Ping,Zhao, Fei-Yang,Hou, Lan-Lan,Yang, Li,Zhang, Zhan-Hui
experimental part, p. 2576 - 2584 (2011/10/18)
A novel, environmentally friendly procedure has been developed for the preparation of secondary or tertiary amines by one-pot reductive amination of carbonyl compounds using sodium borohydride in the presence of a magnetically recoverable sulfonic acid supported on hydroxyapatite-encapsulated-γ- Fe2O3 [γ-Fe2O3@HAP-SO 3H] at room temperature. The catalyst was easily separated from the reaction mixture by applying an external magnet and reused for six cycles without significant loss of catalytic activity.
4-N-aryl(benzyl)amino-4-hetaryl-1-butenes as building blocks in heterocyclic synthesis. 1. New route to 4,6-dimethyl-2-pyridylquinolines from the 4-N-p-methylphenylamino-4-pyridyl-1-butenes
Vargas Mendez, Leonor Y.,Kouznetsov, Vladimir,Stashenko, Elena,Bahsas, Al,Amaro-Luis, Juan
, p. 323 - 326 (2007/10/03)
Mediated-acid intramolecular cyclisation of 4-N-p-methylphenylamino-4-pyridyl-1-butenes 4-6 was used to obtain new C-2 pyridyl substituted 4,6-dimethyl-1,2,3,4-tetrahydroquinolines 7-9, which were oxidised then to their aromatic analogues 10-12 in good yi
