(E)-o-stilbenecarboxylic acid and its p-methyl, chloro and methoxy derivatives

Hiroshi Hamazaki, Shigeru Ohba, Fumio Toda, Hideaki Takumi

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7 Citations (Scopus)


The crystal structures of the title compounds, (E)-stilbene-1-carboxylic acid, C15H12O2, (Ia), (E)-4′-methylstilbene-1-carboxylic acid, C16H14O2, (Ib), (E)-4′-chlorostilbene-1-carboxylic acid, C15H11ClO2, (Ic) and (Ic′), and (E)-4′-methoxystilbene-1-carboxylic acid, C16H14O3, (Id), have been determined. The chloro derivative shows polymorphism, with prisms, (Ic), being obtained from ether/hexane solution and needle crystals, (Ic′), being obtained from ethanol solution. The latter is isostructural with (Id). The selectivities of the products to the addition reaction of bromine are different, however, suggesting that the bromonium ion intermediate is stabilized by a resonance contribution of the p-MeO group.

Original languageEnglish
Pages (from-to)620-624
Number of pages5
JournalActa Crystallographica Section C: Crystal Structure Communications
Issue number5
Publication statusPublished - 1997 May 15

ASJC Scopus subject areas

  • General Biochemistry,Genetics and Molecular Biology


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