2340-23-0Relevant academic research and scientific papers
A pyrylium-coumarin dyad as a colorimetric receptor for ratiometric detection of cyanide anions by two absorption bands in the visible region
Shiraishi, Yasuhiro,Nakamura, Masaya,Matsushita, Naoyuki,Hirai, Takayuki
, p. 195 - 201 (2016)
We synthesized a pyrylium-coumarin dyad (1) and used it for colorimetric detection of cyanide anions (CN-) in aqueous media. The receptor itself exhibits a long-wavelength absorption band at 643 nm due to the strong intramolecular charge transf
REACTIONS OF ACETOPHENONES AND BORON TRIFLUORIDE ETHERATE IN THE PRESENCE OF HOMOLOGS OF ORTHOFORMIC ESTER
Boiko, I. I.,Dergunova, M. E.,Boiko, T. N.
, p. 1169 - 1171 (1987)
It was established that homologs of orthoformic ester (orthoacetic and orthopropionic esters), in contrast to it, do not undergo reaction with substituted acetophenones and boron trifluoride etherate to give γ-alkylpyrylium salts; the products obtained are 2,4,6-triarylpyrylium tetrafluoroborates.
An instantaneous and highly selective chromofluorogenic chemodosimeter for fluoride anion detection in pure water
Elsayed, Sameh,Agostini, Alessandro,Santos-Figueroa, Luis E.,Martinez-Manez, Ramon,Sancenon, Felix
, p. 58 - 62 (2014/03/21)
The fast and the fluoride: A pyridine derivative functionalized with ferf-butyl-dimethylsilyl ether has been synthesized and used as a selective chromofluoro-genic fluoride sensor in water/cetyltri-methylammonium bromide solutions. The chromofluorogenic r
Selective and sensitive chromofluorogenic detection of the sulfite anion in water using hydrophobic hybrid organic-inorganic silica nanoparticles
Santos-Figueroa, Luis Enrique,Gimenez, Cristina,Agostini, Alessandro,Aznar, Elena,Marcos, Maria D.,Sancenon, Felix,Martinez-Manez, Ramon,Amoros, Pedro
, p. 13712 - 13716 (2014/01/06)
In water and wine: Chromofluorogenic detection of the sulfite anion in pure water was accomplished by using a new hybrid organic-inorganic material that contained a probe entrapped in hydrophobic biomimetic cavities. This material was used for the detecti
SYNTHESIS AND CHARACTERIZATION OF NEW TYPES OF 4-PYRIDINIUM BETAINE DYES
Mori, Akira,Kanemasa, Shuji,Fujimoto, Etsuo,Wada, Eiji,Takeshita, Hitoshi,et al.
, p. 869 - 878 (2007/10/02)
Two types of pyridinium betaine dyes, 4-phenolates and 2-phenolates, which have a chromophore either of ET-30 type or the stilbazolium betaine type, have been synthesized.Both types of dyes sho
THE FIRST HOMOLYTIC SUBSTITUTION OF PYRYLIUM SALTS. C-4 METHYLATION OF 2,6-DISUBSTITUTED PYRYLIUM CATIONS.
Doddi, Giancarlo,Ercolani, Gianfranco
, p. 817 - 822 (2007/10/02)
2,6-Diphenylpyrylium and 2,6-di-t-butylpyrylium cations react with methyl radical generated by ButOOH-Fe+2 in acidic aqueous acetonitrile, to yield substitution exclusively at C-4 position.
