Abstract: Various olefins such as styrenes, α, β-unsaturated carbonyl compounds, and α, β, γ, δ-unsaturated carbonyl compounds were directly converted to the corresponding acetophenoximes, α-hydroxyimino carbonyl compounds and γ-hydroxyimino-α, β- unsaturated carbonyl compounds in good or moderate yields by reduction-nitrosation with t- butyl nitrite and triethylsilane in the presence of cobalt (II) porphyrin as a catalyst.
