2-(Biphenyl-4-yl)-5-phenyl-1, 3, 4-oxadiazole (PBD): Electrophilic 4'-substitution and following transformations
A Kurfürst, P Lhoták, P Nádeník…
Index: Kurfuerst, Antonin; Lhotak, Pavel; Nadenik, Petr; Raclova-Pavlikova, Frantiska; Kuthan, Josef Collection of Czechoslovak Chemical Communications, 1991 , vol. 56, # 7 p. 1495 - 1504
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Citation Number: 4
Abstract
Abstract PBD was converted into 4'-substituted derivatives I-XII using usual electrophilic reagents. The decomposition of PBD, 4'-acetyl derivative I and 4'-nitro derivative VI with hydroiodic acid gave 4'-substituted 4-biphenylcarboxylic acids XIIIa-XIIIc and benzoic acid, respectively. The regioselectivity of the reaction was also proved by means of high resolution NMR spectroscopy.
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