Selective intermolecularoxidative cross-coupling of enolates, which is a bond-forming reaction between carbanion equivalents, remains as an unsolved issue despite its potential utility for the direct synthesis of unsymmetrical 1,4-diones. The main difficulty derives from the unavoidable homo-coupling. Our strategy depends on the selective one-electron oxidation of one enolate to afford an electrophilic
The oxovanadium(V)-catalyzed oxidative cross-coupling of enolates using O2 as a terminal oxidant is reported, where a boron enolate and a silyl enol ether were employed as enolates. The redox behavior of V(V/IV) in this reaction under O2 was investigated by ESR and 51V NMR experiments.
报道了使用O 2作为末端氧化剂的氧钒(V)催化的烯醇化物的氧化交叉偶联,其中使用烯醇硼和甲硅烷基烯醇醚作为烯醇化物。通过ESR和51 V NMR实验研究了在O 2下该反应中V(V / IV)的氧化还原行为。