Facile Chemical Dehydrogenation of α-Amino Acids Chelated to a Ruthenium(II) Ion:(α-Imino acidato)bis(1, 10-phenanthroline)ruthenium(II) Complexes^<1)>

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Abstract

(<i>α</i>-Amino acidato)ruthenium(II) complexes were dehydrogenated to give (<i>α</i>-imino acidato)ruthenium(II) complexes by chemical oxidation. (<i>α</i>-Imino acidato)ruthenium(II) complexes, [Ru<sup>II</sup>{N(R<sup>1</sup>)=C(R<sup>2</sup>)CO<sub>2</sub>}(phen)<sub>2</sub>]<sup>+</sup> (R<sup>1</sup> = H, Me, or Bn, R<sup>2</sup> = H; R<sup>1</sup> = H or Me, R<sup>2</sup> = Me; R<sup>1</sup>, R<sup>2</sup> = –(CH<sub>2</sub>)<sub>3</sub>–) were obtained from the (<i>α</i>-amino acidato)ruthenium(II) complexes (glycinato, <i>N</i>-Me-glycinato, <i>N</i>-Bn-glycinato, (<i>S</i>)-alaninato, <i>N</i>-Me-(<i>S</i>)-alaninato, and (<i>S</i>)-prolinato complexes) by using diammonium cerium(IV) nitrate (CAN) as an oxidizing reagent. On the other hand, in the presence of hydrogen peroxide, the <i>α</i>-imino acidato complexes were converted to the corresponding <i>α</i>-imino acidato complexes, except for the glycinato and (<i>S</i>)-alaninato complexes. In particular, the iminoacetatoruthenium(II) complex, [Ru(NH=CHCO<sub>2</sub>)(phen)<sub>2</sub>]<sup>+</sup>, was synthesized for the first time by this method using CAN as an oxidizing reagent. Dehydrogenation with CAN is more facile and versatile than any other method that we have ever examined.

Journal

  • Bulletin of the Chemical Society of Japan

    Bulletin of the Chemical Society of Japan 70(5), 1069-1075, 1997-05-15

    The Chemical Society of Japan

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Codes

  • NII Article ID (NAID)
    10008918633
  • NII NACSIS-CAT ID (NCID)
    AA00580132
  • Text Lang
    ENG
  • Article Type
    ART
  • ISSN
    00092673
  • NDL Article ID
    4219899
  • NDL Source Classification
    ZP1(科学技術--化学・化学工業)
  • NDL Call No.
    Z53-B35
  • Data Source
    CJP  NDL  J-STAGE 
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