Selective extraction of heavy rare-earth metal ions with a novel calix[4]arene-based diphosphonic acid

Naoya Morohashi, Tomoko Hayashi, Yuka Nakamura, Takahiro Kobayashi, Shinya Tanaka, Tetsutaro Hattori

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

The selective extraction of heavy rare-earth metal ions is achieved by using a novel calix[4]arenediphosphonic acid 4, in which two phosphono groups are introduced directly at the lower rim of the calix skeleton through the Ullmann-type phosphonation of the 1,3-bistriflate ester of p-tert-butylcalix[4]- arene 3 as a key step.

Original languageEnglish
Pages (from-to)1520-1522
Number of pages3
JournalChemistry Letters
Volume41
Issue number11
DOIs
Publication statusPublished - 2012

ASJC Scopus subject areas

  • Chemistry(all)

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