Mixed-picolinate and -Quinaldinate Iron(III) Complexes for Catalytic Oxidation of Alcohols with Hydrogen Peroxide
Mixed-picolinate and -Quinaldinate Iron(III) Complexes for Catalytic Oxidation of Alcohols with Hydrogen Peroxide
复制标题
混合吡啶甲酸和喹啉酸铁 (III) 配合物用于过氧化氢催化氧化醇
作者：
田中真司;今喜裕;小川敦子;上坂友美子;田村正則;佐藤一彦
报道了一系列催化H_2O_2氧化醇铁的吡喃甲酸铁络合物。以醋酸铁、6-甲基吡啶甲酸(6-MepicH)和4-氯烟酸(4-ClpicH)为原料，原位合成了Fe催化剂，对H_2O_2氧化1-苯乙醇制苯乙酮表现出较高的催化活性。成功地分离和表征了原位生成的铁络合物作为预催化剂。根据铁络合物的单晶X-射线分析和电化学测量，发现吡啶甲酸酯和喹啉配体的不稳定性和FeI的氧化还原电位是影响催化反应的重要因素。
A series of Fe mixed picolinate and quinaldinate complexes that catalyze the H2O2oxidation of alcohols are presented. The Fe catalysts are generated in situ by simple mixing of iron acetate with 6‐methylpicolinic acid (6‐MepicH) and 4‐chloropicolinic acid (4‐ClpicH); they showed high catalytic activity for H2O2oxidation of 1‐phenylethanol to acetophenone. Fe complexes generated in situ as precatalysts were successfully isolated and structurally characterized. Based on the single‐crystal X‐ray analysis and electrochemical measurements of the Fe complexes, the lability of picolinate and/or quinaldinate ligand and the redox potential of FeIIIwere found to be important factors for the catalytic reaction.