期刊
DYES AND PIGMENTS
卷 199, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2022.110106
关键词
Chromone-3-carbaldehyde; Isocyanide; p-Quinone; Xanthoquinones; Multicomponent reaction
资金
- Iran National Science Foundation (INSF) [95840775]
A new class of quinone dyes, xanthoquinones, have been synthesized through a cycloaddition reaction, resulting in a specific structure of xanthone and quinone subunits.
Xanthoquinones, as a new class of quinone dyes comprising the xanthone and quinone subunits have been synthesized. An elusive aminofurochromone as an electron-rich diene was generated in situ from the corresponding chromone-3-carbaldehyde and alkyl or aryl isocyanide via a formal [4 + 1] cycloaddition reaction, then engaged by p-quinone partner (1,4-benzoquinone or 1,4-naphthoquinone) as an electron-deficient dienophile to afford the desired novel xanthoquinone dye via a [4 + 2] cycloaddition/ring opening/dehydrative aromatization sequence.
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