Abstract
An attempt was made to prepare 4,4'-bis[5-alkyl(aryl)benzoxazol-2-yl]biphenyls by reaction of dimethyl 4,4'-biphenyldicarboxylate with substituted o-aminophenols in a high-boiling solvent in the presence of boric acid.
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Ol'khovik, V.K., Matveenko, Y.V., Kalechits, G.V. et al. Preparative Synthesis of 4,4'-Bis[5-alkyl(aryl)benzoxazol-2-yl]biphenyls. Russian Journal of Applied Chemistry 76, 1792–1794 (2003). https://doi.org/10.1023/B:RJAC.0000018685.80580.c6
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DOI: https://doi.org/10.1023/B:RJAC.0000018685.80580.c6