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The formylation of the upper-rims of thiacalixarenes: synthesis of the first tetra-formylated and the first meta-substituted thiacalix[4]arenes

    Publication: Contribution to journalJournal articlepeer-review

    Abstract

    The conventional Gross reaction for the formylation of the tetrapropoxythiacalix[4]arene using TiCl4 affords the 18-(chloromethyl)-28-hydroxy-25,26,27-tripropoxythiacalix[4]arene substituted in the meta-position of the macrocycle. The p-tetraformyl-tetrapropoxythiacalix[4]arene, which is an interesting intermediate to the upper-rims functionalization of thiacalixarenes, was prepared with a very good yield using BuLi and N-formylpiperidine. (C) 2004 Published by Elsevier Ltd.
    Original languageEnglish
    Pages (from-to)6329-6331
    Number of pages3
    JournalTetrahedron Letters
    Volume45
    Issue number33
    DOIs
    Publication statusPublished - 2004

    Keywords

    • calixarene
    • formylation
    • chloromethylation
    • meta-substitution

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