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单词 aldol
释义

Definition of aldol in English:

aldol

noun ˈaldɒlˈalˌdôl
mass nounChemistry
  • A viscous liquid obtained when acetaldehyde dimerizes in dilute alkali or acid.

    Chemical formula: CH₃CH(OH)CH₂CHO

    Example sentencesExamples
    • Several epoxy ketones were converted to aldols in good yields upon irradiation.
    • Aldols are bifunctional molecules possessing OH and C=O groups, which are able to act as both hydrogen donors and/or acceptors.
    • The most useful mixed Aldols are those where only one reactent can form an enolate.
    • The structures of cycloalkanone-based threo and erythro aldols were investigated by systematic introduction of stereo-determining factors.
    • The simplest aldol - CH 3 CHOHCH 2 CHO - is produced from ethanal.

Origin

Late 19th century: from al(dehyde) + -ol.

 
 

Definition of aldol in US English:

aldol

nounˈalˌdôl
Chemistry
  • A viscous liquid obtained when acetaldehyde dimerizes in dilute alkali or acid.

    Alternative name: 3-hydroxybutanal; chemical formula: CH₃CH(OH)CH₂CHO

    Example sentencesExamples
    • The structures of cycloalkanone-based threo and erythro aldols were investigated by systematic introduction of stereo-determining factors.
    • The most useful mixed Aldols are those where only one reactent can form an enolate.
    • Several epoxy ketones were converted to aldols in good yields upon irradiation.
    • Aldols are bifunctional molecules possessing OH and C=O groups, which are able to act as both hydrogen donors and/or acceptors.
    • The simplest aldol - CH 3 CHOHCH 2 CHO - is produced from ethanal.

Origin

Late 19th century: from al(dehyde) + -ol.

 
 
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更新时间:2024/9/21 22:41:17