Syntheses and photophysical properties of some 5(2)-aryl-2(5)-(4-pyridyl)oxazoles and related oxadiazoles and furans

Autor:	Jeffrey K. Adams, Joel M. Kauffman, J. Herbert Hall, Peter T. Litak, Richard A. Hollins, Joseph Yuming Chien, Ronald A. Henry
Rok vydání:	1992
Předmět:	chemistry.chemical_compound Dye laser chemistry Furan Aryl Organic Chemistry Oxadiazole Organic chemistry Nuclear magnetic resonance spectroscopy Molar absorptivity Luminescence Oxazole
Zdroj:	Journal of Heterocyclic Chemistry. 29:1245-1273
ISSN:	1943-5193 0022-152X
DOI:	10.1002/jhet.5570290534
Popis:	A number of 5-aryl-2-(4-pyridyl)oxazoles, a 2-aryl-5-(4-pyridyl)oxazole, the related oxadiazole and furan, several 2-(4-pyridyl)cycloalkano[d]oxazoles, and many of their quaternary salts were prepared. No single standard synthesis was effective for preparation of more than a few of the 25 free bases described; methods often unique to a base were employed. Minor variations in structure sometimes produced large differences in absorption and emission wavelengths, as well as in the magnitude of the extinction coefficient. The salts are of interest as laser dyes, scintillation fluors, biological stains, and shifters for luminescent solar concentrators.
Databáze:	OpenAIRE
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