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Synthesis of new proton-ionizable dibenzocrown ethers

✍ Scribed by Jong Seung Kim; Richard A. Bartsch

Book ID
102892842
Publisher
Journal of Heterocyclic Chemistry
Year
1998
Tongue
English
Weight
548 KB
Volume
35
Category
Article
ISSN
0022-152X

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✦ Synopsis

Abstract

A series of structurally related dibenzo‐15‐crown‐5, dibenzo‐18‐crown‐6, and dibenzo‐21‐crown‐7 compounds with oxymethylacetoxy side arms is synthesized by reaction of the corresponding crown ether alcohols with potassium hydride and bromoacetic acid. Multi‐step synthetic routes to the crown ether alcohol precursors are reported.

πŸ“œ SIMILAR VOLUMES

Calix[4]arene-bis(dibenzocrown-6-ethers)
Calix[4]arene-bis(dibenzocrown-6-ethers) with one proton-ionizable group
✍ Vladimir S. Talanov; Galina G. Talanova; Maryna G. Gorbunova; Richard A. Bartsch πŸ“‚ Article πŸ“… 2002 πŸ› Elsevier Science 🌐 French βš– 87 KB

Two 1,3-alternate calix [4]arene-biscrowns with one proton-ionizable group and two dibenzocrown-6-ether units are synthesized. The compounds exhibit high Cs + extraction efficiency and selectivity. Cs + /Na + and Cs + /K + selectivities for the new N-(trifluoromethylsulfonyl)carbamoyl-substituted ca