Caesium salts in crown ether synthesis. Preparation of crown ethers from catechol, resorcinol, salicylic acid, and 2,3-dihydroxypyridine

Authors:
  • BKBerend J. van Keulen
    Berend J. van Keulen
  • RKRichard M. Kellogg
    Richard M. Kellogg
  • OPOscar Piepers
    Oscar Piepers
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Abstract
On treatment with caesium carbonate various dihydric phenols as well as salicylic acid are transformed into their dicaesium salts, which on reaction with dibromopolyethylene glycols afford crown ethers.