52565-66-9Relevant academic research and scientific papers
Accelerated Discovery of α-Cyanodiarylethene Photoswitches
Hecht, Stefan,K?nig, Niklas F.,Mutruc, Dragos
supporting information, p. 9162 - 9168 (2021/07/01)
Cyanodiarylethene chromophores are able to undergo constitutional exchange via dynamic covalent chemistry (DCC). During this process, the central ethylene bridge of the molecular scaffold can be broken and thereby enables the assembly of a new combination of aryl moieties around the reformed ethylene bridge. The reversible CC double bond exchange has exemplarily been investigated using α-cyanostilbenes. Establishing a dynamic equilibrium reaction from α-cyanodiarylethene with arylacetonitriles under mild conditions has been the basis to access constitutional libraries of new photoswitches with potentially improved properties. When subject to irradiation with light of adequate wavelength, α-cyanodiarylethenes undergo Z/E isomerization followed by ring-closure. By screening the thus accessible dynamic chromophore libraries using a desired detection wavelength, we could identify specific dithienyl analogues that exhibit three-state photochromism. The combination of dynamic constitutional libraries of functional chromophores in combination with the light-guided screening and selection should lead to more rapid exploration of structural diversity dye chemistry.
Synthesis, optical, and spectroscopic characterisation of substituted 3-phenyl-2-arylacrylonitriles
Percino, M. Judith,Chapela, Victor M.,Perez-Gutierrez, Enrique,Ceron, Margarita,Soriano, Guillermo
experimental part, p. 42 - 51 (2012/01/14)
The Knoevenagel condensation between aldehydes and substrates with active methylene groups was applied to synthesise a series of 3-(4-substituted phenyl)-2-arylacrylonitriles (aryl = phenyl or pyridyl). Chloro-, fluoro-, or dimethylamino-substituted aryls
