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Three steps in one pot: Synthesis of linear bilateral extended 2,2′:6′,2-terpyridineruthenium(II) complexes

Inorganic Chemistry, ISSN: 1520-510X, Vol: 53, Issue: 22, Page: 12122-12126
2014
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  • 12
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Metrics Details

  • Citations
    7
    • Citation Indexes
      7
  • Captures
    12

Article Description

Metal complexes of linear bilateral extended 2,2′:6′,2-terpyridine [2,6-bis(2-substituted furo[2,3-c]pyridin-5-yl)pyridine] are topological tridentate analogues of 5,5′-functionalized 2,2′-bipyridine. The present methodology provides access to linear bilateral extended 2,2′:6′,2-terpyridineruthenium(II) complexes starting from 5,5-bis(methoxymethoxy)-4,4-bis(substituted ethynyl)-2,2′:6′,2-terpyridines via one-pot cleavage of the methoxymethyl (MOM) protecting group, cycloisomerization, and metal complexation in the presence of Ru(DMSO)Cl. In this reaction, ruthenium(II) likely plays a triple role, acting as a Lewis acid to cleave the MOM ether, a catalyst facilitating 5-endo-dig cyclization, and a coordination metal center, being an integral part of the final product.

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