中文摘要：

2-吡啶甲醛分别与异丙胺、苯胺及其衍生物缩合制得一系列双齿希夫碱,采用1H NMR及FT-IR等手段对所得产物结构进行表征.以合成的双齿希夫碱为配体与CuB r2、2,2,6,6-四甲基哌啶-1-氧自由基（TEMPO）结合构成催化体系,用于分子氧为氧化剂的醇的选择性氧化反应,考察了该催化体系的催化性能以及希夫碱结构对催化性能的影响.结果表明,所有催化体系在K2CO3存在下,在乙腈∶水=2∶1的混合溶剂中于50℃,可高活性、高选择性地催化分子氧氧化苄基、烯丙基伯醇生成相应的醛.双齿希夫碱配体的结构对催化体系的催化性能影响不大.

英文摘要：

A series ofbi-dentate Schiffbase ligands were respectively synthesized by the condensation of 2-pyridinecar- boxaldehyde with isopropylamine, aniline and its derivatives. Their structures were characterized by 1H NMR and FT- IR. Catalytic systems were established with the synthesized bi-dentate Schiffbases as ligands in combination with CuBr2 and2,2,6,6-tetramethylpiperidinyl-l-oxy （TEMPO）. Thecatalyticsystemswereappliedtotheoxidationofalcoholswith O5 as an oxidant. The effect of the structures of the ligands on the performances of the catalytic systems was investigated. The results indicate that the catalytic systems can catalyze molecular oxygen oxidizing primary benzyl and allyl alcohols to their corresponding aldehydes with high activity and selectivity at 50℃ in CH3CN/H2O （V/V= 2/1）. The structures of the bi-dentate Schiff bases have no obvious influence on the performance of the catalytic systems.