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On the chemistry of α-formyl-2-hydroxyacetophenone (1995)

Széll, T. ; Sohár, P. ; Horváth, Gy.

Weinheim : Wiley-Blackwell

Liebigs Annalen 1995 (1995), S. 2043-2044

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ISSN: 0947-3440

Keywords: Acetophenone, α-formyl-2-hydroxy- ; Condensation reaction, base-promoted ; Chromones ; Chemistry ; Organic Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: The title compound 1 undergoes cyclization and self-condensation in the presence of dil. NaOH yielding chromone (2) and/or 1-(3-chromonyl)-2-(2-hydroxybenzoyl)ethene (3). With benzaldehyde in the presence of piperidine in boiling ethanol, 1 reacts both by cyclization, and self-condensation combined with cyclization to give 2, 3 and bis(3-chromonyl-phenyl)methane (5). If less than 0.1 M aq. NaOH is used 1 and benzaldehyde produces 3-(α-hydroxybenzoyl)chromone (4) which can also be converted into 5.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/jlac.1995199511286

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