Synthesis of mono- and di-potassium salts and methoxy adducts of sulfur-bridged biphenols by selective deprotonation

P L Arnold, J J Hall, L S Natrajan, A J Blake, C Wilson, Polly Arnold

Research output: Contribution to journalArticlepeer-review

Abstract

Treatment of the sulfur-bridged biphenol [1,1'-S(2-HOC6H2But-3-Me-5)(2)] with potassium hydride in diethyl ether results in the selective deprotonation of one phenol group to yield [1,1'-S(2-KO)(2'-HO)(C6H2But-3-Me-5)(2)(Et2O)], whereas an excess of potassium hydride in thf is required to generate the dianion [1,1'-S(2-KOC6H2But-3-Me-5)(2)(thf)(2)]; the same selective deprotonation is observed for the binaphthol [1,1'-S(2-HOC10H4Bu2t-3,6)(2)], suggesting that intramolecular H-bonding stabilises the second, remaining hydroxyl group, allowing new, simple routes to tuneable, mono- or di-anionic aryloxide-based ligands.

Original languageEnglish
Pages (from-to)1053-1055
Number of pages3
JournalDalton Transactions
Issue number6
DOIs
Publication statusPublished - 2003

Keywords

  • BIS(PHENOLATO) LIGAND
  • TITANIUM COMPLEXES
  • METAL
  • POLYMERIZATION
  • CATALYSTS

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