α-芳族酮酸钛盐和锂试剂还原反应机理初探  

A STUDY ON THE MECHANISM OF THE REDUCTIVE REACTION OF TITANATES OF α-KETO AROMATIC ACIDS WITH RLi

作　　者：段新方[1] 尹承烈[1] 

机构地区：[1]北京师范大学化学系,北京100875

出　　处：《北京师范大学学报（自然科学版）》2001年第5期648-652,共5页Journal of Beijing Normal University(Natural Science)

基　　金：国家自然科学基金资助项目 ( 2 93 72 0 3 8)

摘　　要：对钛调整体系中的一种新的还原反应的机理进行推证 ,证明体系的还原反应中存在一种类似Meerwein Ponderf Verley还原反应的分子内氢迁移反应 ,同时证明体系中的锂试剂以 2种不同的方式促进了该还原反应的进行 .A new reductive reaction is discovered in the system of titanium involving titanates of carboxylic acids ArCOCOOTi(OR 1) 3 and RLi, its mechanism is investigated in detail. The new reduction is proved to mostly result from the migration of hydrogen from OR 1 group to carbonyl group similar to the reduction of Meerwein-Ponderf-Verley. It is also concluded that RLi reagents facilitate the reaction in two manners.

关 键 词：羧酸钛盐 Α-酮酸 α-羟基羧酸 还原机理 

分 类 号：O627.43[理学—有机化学] O614.111[理学—化学]