Aldehyde olefination with a ruthenium(II) salen catalyst

作者：Sun W; Kuhn FE^*

来源：Applied Catalysis A: General , 2005, 285(1-2): 163-168.

DOI：10.1016/j.apcata.2005.02.021

• aldehyde olefination
• homogeneous catalysis
• ionic liquids
• ruthenium
• salen

A ruthenium salen complex of the type Ru(II)(salen)(PPh3)(2) can be successfully applied as catalyst for the olefination of a broad variety of aldehydes. Dependent on the electron richness of the applied aldehydes, good to very good olefin yields are obtained and high E/Z-selectivities are reached at 80° C reaction temperature with ethyl diazo acetate being the reaction partner. The reaction rate depends on the electron-donor capabilities of the aldehydes. Electron-poor aldehydes undergo faster reactions than electron-rich aldehydes, but both electron-rich and bulky aldehydes can be transformed to olefins in very good yields as well. Very good E/Z-selectivities and quantitative olefin yields are obtained for aromatic aldehydes when the reaction is performed in the room-temperature ionic liquid (Bmim)PF6 and toluene. © 2005 Elsevier B.V.

• 出版日期2005-5-10