Synthesis of perfluorochemicals for use as blood substitutes. Part III. [1] electrochemical fluorination of quinolozidine, 4-methylquinolizidines and 4-trifluoromethylquinolizidines [2]
作者:Yoshihisa Inoue、Yoshio Arakawa、Youichiro Naito、Taizo Ono、Chikara Fukaya、Kouichi Yamanouchi、Kazumasa Yokoyama
DOI:10.1016/s0022-1139(00)81066-0
日期:1988.3
Electrochemical fluorination of quinolizidine gave F-quinolizidine in 16-23% isolated yields. 4-Methylquinolizidine was also fluorinated electrochemically to give the corresponding amine stereoisomers along with their fragmented and rearranged products in isolated yields of 28-34% and 2-3%, respectively. Introduction of an F-methyl group into the quinolizidine in place of the methyl group prior to
喹oli嗪的电化学氟化以16-23%的分离产率得到F-喹oli嗪。还对4-甲基喹oli嗪进行氟化,以分离的产率分别得到相应的胺立体异构体及其片段化和重排的产物,分离产率分别为28-34%和2-3%。在电化学氟化之前,将F-甲基代替甲基引入喹oli嗪中并不能稳定4-甲基喹oli啶结构,而是允许更大程度地形成F-喹oli啶。在催化量的HgSO 4存在下,用发烟硫酸氧化4-(F-甲基)-F-喹唑烷以60%的收率得到6-氧代-4-(F-甲基)-F-喹oli嗪,其F-nmr光谱进一步支持了起始原料的结构。描述了这些F-化学物质的物理和光谱性质。