temperature with malonates and acetoacetates in the presence of palladium-phosphine complexes as a catalyst to give γ-substituted α,β-unsaturated nitriles selectively. Also γ-acetoxy-α,β-unsaturated ester was attacked at y-position by malonate.
α-乙酰氧基-β,γ-不饱和腈在室温下与
丙二酸酯和
乙酰乙酸酯在
钯-膦配合物作为催化剂存在下反应,选择性地生成γ-取代的α,β-不饱和腈。γ-乙酰氧基-α,β-不饱和酯也被
丙二酸酯在y-位攻击。