Chemistry of Heterocyclic Compounds p. 149 - 153 (1985)
Update date:2022-08-04
Topics:
Krasovitskii, B. M.
Shapiro, S. G.
Yushko, E. G.
The condensation of hydrochloric salts of ω-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 spectroluminiscent 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.
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Doi:10.1007/BF00948060
(1985)Doi:10.1016/0022-328X(86)80229-7
(1986)Doi:10.1016/S0040-4039(00)94775-0
(1985)Doi:10.1021/jm00170a011
(1990)Doi:10.1021/ja00870a029
(1962)Doi:10.1246/cl.1987.1775
(1987)
