Sterically hindered mono- and bis(2,5-diaryloxazoles) containing biphenyl systems

Journal Article · Thu Aug 01 04:00:00 EDT 1985 · Chem. Heterocycl. Compd. (Engl. Transl.); (United States)

DOI:https://doi.org/10.1007/BF00504197· OSTI ID:6181322

Krasovitskii, B M; Shapiro, S G; Yushko, E G

The condensation of hydrochloric salts of omega-aminomethyl aryl ketones with diphenic anhydride or with the diacid chloride of diphenic acid and subsequent cyclodehydration of the condensation products formed give sterically hindered mono- and bis(2,5-diaryloxazoles) containing the biphenyl system. The spectroluminescent properties of these compounds were studied. Comparison of the absorption spectra of 2,2'-di(5-phenyloxazolyl-2)biphenyl and 2,5-diphenyloxazole indicates the complete lack of conjugation between the diphenyloxazole fragments, their independent behavior, and their retention of the spatial configuration of 2,5-diphenyloxazole. 2,2'-Di(5-phenyloxazolyl-2)biphenyl has a large Stokes shift. Steric hindrance is also found in 2-carboxy-2'-(5-phenyloxazolyl-2)biphenyl molecules.

• Research Organization: Monokristallreaktiv Scientific-Production Association, Kharkov, USSR
• OSTI ID: 6181322
• Journal Information: Chem. Heterocycl. Compd. (Engl. Transl.); (United States), Journal Name: Chem. Heterocycl. Compd. (Engl. Transl.); (United States) Vol. 21:2; ISSN CHCCA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ABSORPTION SPECTRA
AROMATICS
AZOLES
BIPHENYL
BOND ANGLE
CARBOXYLIC ACID SALTS
CARBOXYLIC ACIDS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
CONFORMATIONAL CHANGES
DEHYDRATION
DEHYDROCYCLIZATION
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
KETO ACIDS
KETONES
LIQUID SCINTILLATORS
LUMINESCENCE
MOLECULAR STRUCTURE
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OXAZOLES
PHOSPHORS
PHOTOLUMINESCENCE
SPECTRA
SPECTRAL SHIFT
STEREOCHEMISTRY
STRUCTURAL CHEMICAL ANALYSIS
SYNTHESIS
YIELDS