Cobalt(II)-Catalyzed Reaction of Enolizable Aldehydes with Alkenes in the Presence of Dioxygen: The Role of Acyl Radical
作者:T. Punniyamurthy、Beena Bhatia、Javed Iqbal
DOI:10.1021/jo00083a029
日期:1994.2
Complex [bis(salicylidene-N-phenethyl)] cobalt(II) (1) catalyzes the reaction of enolizable aliphatic aldehydes and dioxygen with an electron-deficient alkene to afford the adducts 4 and 5, whereas the reaction with unactivated alkenes leads to the corresponding epoxides 6. These reactions are proposed to proceed via a common pathway involving acyl radicals.
Cobalt(II) catalysed reaction of alkenes with aliphatic aldehydes and molecular oxygen: scope and mechanism
prepared using Schiff's bases derived from aromatic aldehydes and amines or α-aminoesters. These complexes are versatile catalyst for the reaction between aliphatic aldehydes and various alkenes. The outcome of the reaction is controlled by the electronic nature of the alkene as the electron deficient alkenes undergo oxidative addition of aldehydes followed by dioxygen incorporation to yield 2-hydr