A highly specific tetrazole-based chemosensor for fluoride ion: A new sensing functional group based on intramolecular proton transfer was written by Li, Ju-Ying;Zhou, Xin-Qi;Zhou, Yi;Fang, Yuan;Yao, Cheng. And the article was included in Spectrochimica Acta, Part A: Molecular and Biomolecular Spectroscopy in 2013.COA of Formula: C14H14N2O2 This article mentions the following:
A simple but highly selective colorimetric and fluorescent chemosensor for fluoride ion was prepared based on coumarin chromophore and 1H-tetrazole. Tetrazole functional group provided a novel sensing functional group containing the ESIPT structure for designing fluoride chemosensor. In the experiment, the researchers used many compounds, for example, 7-(Diethylamino)-2-oxo-2H-chromene-3-carbonitrile (cas: 51473-74-6COA of Formula: C14H14N2O2).
7-(Diethylamino)-2-oxo-2H-chromene-3-carbonitrile (cas: 51473-74-6) belongs to nitriles. Nitrile compounds can be prepared by the incorporation of a cyanide source through C–C bond formation or by dehydration of primary carboxamides. Some nitriles are manufactured by heating carboxylic acids with ammonia in the presence of catalysts. This process is used to make nitriles from natural fats and oils, the products being used as softening agents in synthetic rubbers, plastics, and textiles and for making amines.COA of Formula: C14H14N2O2
Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts