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Salicylic aldehydes were readily alkylated with (chloromethyl)trimethylsilane to give silylated ortho-methoxy benzaldehydes in 85–96 % yields. These aldehydes were converted into alkyl and aryl imines in excellent yields. O-(Trimethylsilyl)methyl moiety was applied as the synthetic equivalent of aryloxymethyl anion in the nucleophilic cyclization at the imine group promoted by CsF in DMF at 140 °C. Using this traceless methodology, 2,3-dihydrobenzofuran-3-amines were synthesized from salicylic aldehydes in 25–55 % yields in three steps.
Язык оригиналаАнглийский
Номер статьи154992
ЖурналTetrahedron Letters
Том139
DOI
СостояниеОпубликовано - 1 апр. 2024

    Предметные области ASJC Scopus

  • Organic Chemistry
  • Drug Discovery
  • Biochemistry

ID: 54324692