Ni0-induzierte und -katalysierte Herstellung ungesättigter Adipinsäureanilide
作者:Heinz Hoberg、Dieter Bärhausen
DOI:10.1016/0022-328x(91)86489-d
日期:1991.2
is shown that 4-pentencarboxylic acidanilide (I), which can readily be prepared catalytically fromethene and phenylisocyanate (II), further reacts with II on ligand-nickel(0)-systems in a highly regioselective reaction to form triphenylphosphine-5-azanickelacyclopentan-4-one (Va). Protonolysis of Va leads to adipic acidanilide. When Va is treated with maleic acid anhydridge at 20°C, a β'-H-elimination
Reactivity of Grubbs' Catalysts with Urea- and Amide-Substituted Olefins. Metathesis and Isomerization
作者:Pilar Formentín、Nélida Gimeno、Joachim H. G. Steinke、Ramón Vilar
DOI:10.1021/jo051120y
日期:2005.9.1
The reactions of a series of urea- and amide-substituted olefins with Grubbs' catalysts are presented. Depending on the substrate's nature, the formation of either cross-metathesis or isomerization products is observed. To favor the cross-metathesis products, the reactions have been carried out using a wide range of experimental conditions. Upon addition of monophenyl phosphoester to these reactions, the isomerization of the olefins is completely suppressed and the cross-metathesis products are obtained in up to 60% yield.