Efficient synthesis of purine analogues: an FeCl3–SiO2-promoted cyclization reaction of 4,5-diaminopyrimidines with aldehydes leading to 6,8,9-trisubstituted purines
作者:Qun Dang、Brian S Brown、Mark D Erion
DOI:10.1016/s0040-4039(00)01074-1
日期:2000.8
6,8,9-Trisubstituted purine analogues were efficiently synthesized via cyclization of 6-chloro-4,5-diaminopyrimidines and various aldehydes promoted by FeCl3–SiO2. Fe(III) chloride on silica gel has a dual role of a dehydration agent and an oxidant, and was conveniently removed during work-up by filtration.
通过6-氯-4,5-二氨基嘧啶和FeCl 3 -SiO 2促进的各种醛的环化,可有效合成6,8,9-三取代嘌呤类似物。硅胶上的氯化亚铁(Fe(III))具有脱水剂和氧化剂的双重作用,并且在后处理过程中可以通过过滤方便地除去。