New Method for the Synthesis of Diversely Functionalized Imidazoles from N-Acylated α-Aminonitriles
作者:Yong-Li Zhong、Jaemoon Lee、Robert A. Reamer、David Askin
DOI:10.1021/ol036423y
日期:2004.3.1
[reaction: see text] A new general method for the synthesis of medicinally important diversely functionalized imidazoles from N-acylated alpha-aminonitriles has been developed. N-Acylated alpha-aminonitriles were reacted with triphenylphosphine and carbon tetrahalide to afford 2,4-disubstituted 5-halo-1H-imidazoles in good yield. This new methodology was applied for the synthesis of 2-butyl-4-chloro-
[反应:见正文]已经开发了一种新的通用方法,可以从N-酰化的α-氨基腈中合成具有医学重要性的多样化官能化的咪唑。使N-酰化的α-氨基腈与三苯基膦和四卤化碳反应,以良好的产率得到2,4-二取代的5-卤代-1H-咪唑。该新方法学被用于合成2-丁基-4-氯-5-羟基甲基咪唑。这些卤代咪唑可通过钯催化的偶联反应直接转化为2,4,5-三取代的咪唑。