2価コバルト錯体触媒を用いる有機合成新手法の展開

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Our recent study on oxygenation and carbon-carbon bond forming reaction of olefinic compounds using a series of cobalt (II) catalysts have been descrived in the following four reactions.<BR>(1) Catalytic hydration of olefins with molecular oxygen and 2-propanol is performed by using bis (1, 3-diketonato) cobalt complex (Oxidation-Reduction Hydration).<BR>(2) The above cobalt (II) complex efficiently promoted the novel peroxygenation of a wide range of olefinic compounds with molecular oxygen and triethylsilane to afford the triethylsilyl peroxides in high yields. (Triethylsilylperoxygenation) <BR>(3) The cross coupling reactions of α, β-unsaturated compound with aldehyde and phenylsilane proceed in the presence of the cobalt (II) catalyst to give the aldol-type product.<BR>(4) Under the similar condition, catalytic oximation of α, β-unsaturated compound is achieved by using butylnitrite as an electrophile. The synthetic applications and a possible reaction path-way are also described.
社団法人有機合成化学協会の論文