Preparation of n-butoxy(13C2-acetic) acid, 1-n-butoxy-2-hydroxy (13C2-ethane), (n-butoxy-2′,2′,3′,3′,4′,4′,4′-d7)acetic acid, and 2-(n-butoxy-2′,2′,3′,3′,4′,4′,4′-d7)ethanol
作者:James R. Pribish
DOI:10.1002/jlcr.2580360304
日期:1995.3
(n-Butoxy-2′,2′,3′,3′,4′,4′,4′-d7)acetic acid (1) and 2-(n-butoxy-2′,2′,3′,3′,4′,4′,4′-d7)ethanol (2) have been prepared in high yield from n-butanol-2,2,3,3,4,4,4-d7. n- Butoxy(13C2-acetic) acid (3) and 1-n-butoxy-2-hydroxy(13C2-ethane) (4) have also been synthesized using bromoacetic-13C2 acid as the source of labelled carbon. The main complication in the development of the process was partial conversion of butoxyacetic acid to butyl butoxyacetate during GC analysis, which hampered evaluation of trial reactions.
(正丁氧基-2',2',3',3',4',4',4'-d7)乙酸(1)和2-(正丁氧基-2',2',3',由正丁醇-2,2,3,3,4,4,4-d7 以高产率制备了 3',4',4',4'-d7)乙醇 (2)。还使用溴乙酸-13C2 酸作为标记碳源合成了正丁氧基(13C2-乙酸)(3)和1-正丁氧基-2-羟基(13C2-乙烷)(4)。该工艺开发过程中的主要问题是GC分析过程中丁氧基乙酸部分转化为丁氧基乙酸丁酯,这阻碍了试验反应的评估。