有机氧化合成反应中的绿色催化化学

近年来 ,有机氧化合成领域出现了一些新的氧化方法 :在分子筛催化剂作用下 ,以N2 O作羟基化剂 ,直接将苯气相氧化为苯酚 ;钛硅分子筛催化剂一步催化丙烯与H2 O2 反应生成环氧丙烷 ;以分子氧为氧源 ,在水 /有机两相体系 ,催化四氢萘的自动氧化 ,α -四氢萘酮的选择性为 6 8% ;利用水在阳极产生的活性氧直接使丙烯环氧化生成环氧丙烷 ,实现了以电子代替H2 O2 催化丙烯环氧化。新方法与使用有毒或腐蚀性的反应物和产生大量废弃物的传统工艺相比较 ,更加接近绿色化学所提出的目标。对催化体系和过程的深入研究 ,新的高效催化剂的开发 ,将推动绿色化学进一步发展

Green Chemistry in Organic Oxidation Synthesis Reaction

In recent years, some new oxidation methods appear in organic oxidation synthesis field. Some of them are catalyzed by molecular sieve and N 2O taken as hydroxylateto oxide the benzene gas into phenol directly; to catalyze the reaction of propylene with H 2O 2 in one step by titanium silicalite to produce catalyzed auto-oxidation of tetralin in hydro/organic two-phase system when oxygen taken as oxygen source; using the active oxygen produced by H 2O 2 in electrode to oxide propylene to propylene oxide directly. These new methods, compared with those traditional processes that use harmful and erosive reactants and produce lot of waste, are more near to the goal proposed by green chemistry. The further study on the catalyst system and process, the development of new and high effective catalysts will certainly promote the development of green chemistry.