β-阿朴-■＇-胡萝卜醛的合成研究  

The Synthesie of β-apo-δ' Carotenal

作　　者：徐平俊 李坤福[1] 卓启疆 

机构地区：[1]成都科技大学高分子研究所

出　　处：《成都科技大学学报》1992年第3期77-84,共8页

基　　金："八六三"计划项目资助

摘　　要：本文研究了β-胡萝卜素在弱碱条件下用高锰酸钾氧化制备β-阿朴-δ＇-胡萝卞醛。探讨了反应机理,提出了用苯作中间体的猝灭剂,保护醛基不被进一步氧化.研究了影响胡萝卜醛产率的因素,得到了最佳反应条件,产率甲文献报导的10%提高到41.5%。用 IR,MS 鉴定了产物的结构,讨论了质谱中碎片离子的断裂机理,自动氧化实验表明:胡萝卜醛中双键比醛基更容易氧化。This paper studies the prepration of β-apo-8＇-carotenal by oxidation of β-carotene with potassium permanganate in weak alkaline media.It discusses the mechanism of oxidation,and reveals that benzene plays the role of a quenching agent of intermediate for saving aldehyde,which however,underopes further oxidation by manganese intermediates.A series of studies on reaction condition have obtained optimum condition permitting better yield(41.5%)of carotenal shows that the published literatures(10%).Auto-oxidation of carotenal shows that the activity of double bond is higher than aldehyde group's. Thestructure of carotenal is identified by IR,MS.Further more,mechanisms of elimination in MS are discussed.

关 键 词：Β-胡萝卜素 胡萝卜醛 

分 类 号：O629.4[理学—有机化学]