Synthesis of 1-halophenyl 4-(2-imidazolyl)-1-butanones and 5-(2-imidazolyl)-1-pentanones and their ketalization with glycerol
作者:Liang-Fu Huang、Ludwig Bauer
DOI:10.1002/jhet.5570340405
日期:1997.7
reacted with 1-amino-2,2-dimethoxyethane to form an amidine. Hot dilute hydrochloric acid converted this ami-dine to the 2-imidazolyl ketone 5b. Syntheses of homologous 1-(4-chloro- and 2,4-dichlorophenyl)-4-(2-imidazolyl)-1-pentanones 20 are described. Ketalizations of 5 and 20 with glycerol formed imidazolyl 1,3-dioxolanyl alcohols. Selective N- and O-alkylations of some of these imidazolyl alcohols are
1-((二甲基氨基)甲基-和1-甲基] -2-锂硫代咪唑未能取代后,呈现1-(2,4-二氯苯基)-4-(2-咪唑基)-1-丁酮5d的另一种合成方法2-(2,4-二氯苯基)-2-(3-碘丙基)-1,3-二氧戊环令人满意地满足要求(3b)。乙醇向2-(2,4-二氯苯基)-2-(3-氰基丙基)-1,3-二氧戊环的Pinner加成反应生成相应的亚氨酸酯,该亚氨酸酯与1-氨基-2,2-二甲氧基乙烷反应形成an 。热稀盐酸将该converted胺转化为2-咪唑基酮5b。描述了同源的1-(4-氯-和2,4-二氯苯基)-4-(2-咪唑基)-1-戊酮20的合成。5和20的缩略词与甘油形成咪唑基1,3-二氧戊环醇。描述了这些咪唑基醇中的一些的选择性N-和O-烷基化。