nature. The complexes efficiently oxidise an α,β-unsaturated ketone to the corresponding epoxide and benzonitrile to benzamide. Such reactions are usually accomplished using alkaline-H2O2 reagent. The complexes are also capable of bringing about Bayer-Villiger-type oxidation and oxidise benzil to benzoic acid. The peroxo-depleted vanadium product, isolated after the oxidations, has been identified as a diperoxovanadate(V)
已经研究了雷公藤
钒(V)络合物A [V(O 2)3 ]·3H 2 O(A = Na或K)作为某些有机底物的潜在氧化剂的功效。络合物的
水溶液本质上是碱性的(pH约为11)。该配合物有效地将α,β-不饱和酮氧化为相应的
环氧化物,并将
苄腈氧化为苯甲酰胺。此类反应通常使用碱性H 2 O 2试剂完成。该配合物还能够引起Bayer-Villiger型氧化并将苯甲酰氧化为
苯甲酸。氧化后分离出的过氧贫化
钒产品,已确定为二过氧
钒酸盐(V)络合物,[VO(O 2)2(H 2 O)] -。