Diastereoselective self-assembly of chiral diamine-chelated aryllithiums to dimeric aggregates

Anne M. Arink, Claudia M. P. Kronenburg, Johann T. B. H. Jastrzebski, Martin Lutz, Anthony L. Spek, Robert A. Gossage, Gerard Van Koten

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Aryllithium compounds [LiC6H4(CH2N(Et) CH2CH2NEt2)-2]2(2b), [LiC6H4(CH(Me)N(Me)CH2-CH2NMe2-(R))-2]2((R)-3b), and [LiC6H4(CH(Me)N(Me)CH2CH2NMe2-(rac))-2]2((rac)-3b) were synthesized and characterized in the solid state and in solution. X-ray crystallographic studies of 2b and (R)-3b and molecular weight determinations of 2b, (R)-3b, and (rac)-3b by cryoscopy in benzene showed that, both in the solid state and in apolar, noncoordinating solvents such as benzene, these compounds exist as discrete dimeric aggregates. For (R)-3b and (rac)-3b the aggregation process of two monomeric aryllithium units to one dimer is highly diastereoselective.
Original languageEnglish
Pages (from-to)16249-16258
Number of pages10
JournalJournal of the American Chemical Society
Volume126
Issue number49
DOIs
Publication statusPublished - 15 Dec 2004

Keywords

  • diamine
  • dimer
  • lithium derivative
  • article
  • chemical reaction
  • chirality
  • combinatorial chemistry
  • diastereoisomer
  • dimerization
  • molecular interaction
  • molecular weight
  • reaction analysis
  • solid state
  • X ray crystallography

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