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Phosphorus, Sulfur, and Silicon and the Related Elements Volume 183, 2008 - Issue 2-3
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Original Articles

Design, Synthesis, and Application of Phosphaalkenes to Unique Palladium and Gold Catalysts

Shigekazu Ito Department of Chemistry, Graduate School of Science, Tohoku University, Aoba, Sendai, Japan
,
Matthias Freytag Department of Chemistry, Graduate School of Science, Tohoku University, Aoba, Sendai, Japan
,
Hongze Liang Department of Chemistry, Graduate School of Science, Tohoku University, Aoba, Sendai, Japan
,
Katsunori Nishide Department of Chemistry, Graduate School of Science, Tohoku University, Aoba, Sendai, Japan
&
Masaaki Yoshifuji Department of Chemistry, Graduate School of Science, Tohoku University, Aoba, Sendai, Japan; Department of Chemistry, The University of Alabama, Tuscaloosa, AL, USA
Pages 555-557 | Published online: 21 Jun 2008
 
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Abstract

A 2-silyl-1,3-diphosphapropene was utilized as an asymmetrical P2 ligand of stable palladium(II) catalysts. Several phosphaalkene ligands were utilized for synthesis of novel gold(I) complexes which exhibited unique catalytic activity in 1,6-enyne cycloisomerization, indicating effects of P = C double bond, Au–Au contact, and sulfanyl group.

Acknowledgments

We thank Mr. Sou Hashino, Tohoku University, for conducting the reaction of 6 to 8 in the presence of 4 and Prof. Noboru Morita for his helpful comments and suggestions.

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