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<p>Chalcones with a <i>tert</i>-butyl substituent in ring A were obtained from previously synthesized isomeric <i>tert</i>-butyl(dihydroxy)acetophenones. Oxidative cyclization of 2′-hydroxychalcones in the I<sub>2</sub>—DMSO system promotes the formation of the corresponding flavones in high yields. Cyclization under the conditions of the Algar—Flynn—Oyamada reaction results in <i>tert</i>-butylflavonols.</p>

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Synthesis of flavonoids from tert-butyl(dihydroxy)acetophenones

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • M. V. Krylova,
  • S. A. Popova,
  • I. Yu. Chukicheva

摘要

Chalcones with a tert-butyl substituent in ring A were obtained from previously synthesized isomeric tert-butyl(dihydroxy)acetophenones. Oxidative cyclization of 2′-hydroxychalcones in the I2—DMSO system promotes the formation of the corresponding flavones in high yields. Cyclization under the conditions of the Algar—Flynn—Oyamada reaction results in tert-butylflavonols.