Convenient methods for the synthesis of d4, d2 and d6 isotopomers of 4-(4-fluorobenzyl)piperidine
作者:Ágnes Proszenyák、Béla Ágai、Gábor Tárkányi、László Vida、Ferenc Faigl
DOI:10.1002/jlcr.936
日期:2005.5
Pure 4-(4-fluoro-[2,3,5,6-2H4]benzyl)piperidine was prepared via the Grignard reaction of 4-fluoro-[2,3,5,6-2H4]bromobenzene and pyridine-4-aldehyde followed by consecutive deoxygenation and heteroatomic ring saturation in the presence of palladium on carbon catalyst. An improved method for the catalytic H/D exchange in benzylic positions of 4-(4-fluorobenzyl)piperidine and its d4 derivative has also
通过 4-氟-[2,3,5,6-2H4]溴苯和吡啶-4-的格氏反应制备纯4-(4-氟-[2,3,5,6-2H4]苄基)哌啶醛,然后在钯碳催化剂存在下连续脱氧和杂原子环饱和。还描述了在 4-(4-氟苄基) 哌啶及其 d4 衍生物的苄基位置进行催化 H/D 交换的改进方法。版权所有 © 2005 John Wiley & Sons, Ltd.