胺基化聚苯乙烯负载B(C_(6)F_(5))_(3)催化醛酮的去氧化还原  

Deoxygenation Reaction of Ketones and Aldehydes Catalyzed by B(C_(6)F_(5))_(3)-immobilized Aminated Polystyrene

作　　者：温志国[1] 田冲[1] 聂万丽[1] WEN Zhi-guo;TIAN Chong;NIE Wan-li(Sichuan Province Key Laboratory of Natural Products and Small molecule Synthesis,School of Chemistry,Resources and Environment,Leshan Normal University,Leshan 614000,China)

机构地区：[1]乐山师范学院化学与资源环境学院天然产物化学与小分子催化四川省高校重点实验室,四川乐山614000

出　　处：《化学试剂》2021年第10期1434-1438,共5页Chemical Reagents

基　　金：国家自然科学基金资助项目(21542011);四川省科技厅项目(2020YJ0358);大学生创新创业训练项目(201910649008)。

摘　　要：以胺基改性聚苯乙烯高分子材料作为载体,负载大位阻路易斯酸三(五氟苯基)硼烷(B(C_(6)F_(5))_(3)),研究了以硅烷为还原剂,负载B(C_(6)F_(5))_(3)催化剂对醛酮的催化去氧化还原反应活性及负载催化剂的耐受性。研究结果表明,胺基改性聚苯乙烯负载的催化剂B(C_(6)F_(5))_(3)在对醛酮催化去氧化还原时,其反应活性不仅与均相条件相当,甚至在反应的选择性上有时会表现出不同于均相反应的特征。而且负载后的B(C_(6)F_(5))_(3)催化剂在催化醛酮还原时,循环使用8次以上时仍能保持较高的反应活性。Using aminated polystyrene as carrier,immobilized B(C_(6)F_(5))_(3)catalyst was synthesized.Then the deoxidization and reduction of aldehydes and ketones catalyzed by B(C_(6)F_(5))_(3)-immobilized aminated polystyrene was investigated with silane as reducing agent.The results showed that the reaction activity of B(C_(6)F_(5))_(3)catalyst supported by amine-modified polystyrene is not only equivalent to that under homogeneous conditions,but also different from that of homogeneous reaction in selectivity.Most importantly,the supported B(C_(6)F_(5))_(3)catalyst can maintain a high reactivity in the reduction of aldehydes and ketones after more than 8 cycles.

关 键 词：受限路易斯酸碱对 负载化 胺基改性聚苯乙烯 醛酮 去氧化反应 

分 类 号：O6[理学—化学]