Synthesis of N-bonded enolatoruthenium(II) by oxidative addition of alkyl cyanocarboxylate to a ruthenium(0) complex

被引：28

作者：

Hirano, M ^{[1
]}

Takenaka, A ^{[1
]}

Mizuho, Y ^{[1
]}

Hiraoka, M ^{[1
]}

Komiya, S ^{[1
]}

机构：

[1] Tokyo Univ Agr & Technol, Fac Technol, Dept Appl Chem, Tokyo 1848588, Japan

来源：

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS | 1999年 / 18期

关键词：

D O I：

10.1039/a902860i

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Reaction of a zero-valent ruthenium complex [Ru(cot)(cod)] 1 (cod = 1,5-cyclooctadiene; cot = 1,3,5-cyclooctatriene) with alkyl cyanoacetate in the presence of mono- and bi-dentate tertiary phosphines gave a series of hydrido(enolato)ruthenium(II) complexes: mer-[RuH(NCCHCO2Et)(NCCH2CO2Et)(PPh3)(3)] 2; trans-[RuH(NCCHCO2Et)(cod)(dppe)] 3 (dppe = Ph2PCH2CH2PPh2); trans-[RuH((NCCRCO2R2)-C-1)(dppe)(2)] (R-1 = H, R-2 = Et 4a: or Pr-i 4b; R-1 = Me, R-2 = Et 4c) and trans-[RuH(NCCMeCO2Et)(PMePh2)(4)] 5. The molecular structure of 3 shows that the enolato ligand co-ordinates to the ruthenium centre via the cyano group in an octahedral geometry. These hydrido(enolato)ruthenium(II) complexes catalyse Michael and Knoevenagel reactions under neutral and mild conditions.

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页码：3209 / 3216

页数：8

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