A multicomponent reaction of 2-aminoimidazoles: microwave-assisted synthesis of novel 5-aza-7-deaza-adenines
作者:Felicia Phei Lin Lim、Szy Teng Low、Elvina Lee King Ho、Nathan R. Halcovitch、Edward R. T. Tiekink、Anton V. Dolzhenko
DOI:10.1039/c7ra11305f
日期:——
An efficient and highly selective multicomponent synthesis of 4-aminoimidazo[1,2-a][1,3,5]triazines, which are 5-aza-7-deaza-isosteres of adenine, was developed. The reaction of 2-aminoimidazoles, triethyl orthoformate and cyanamide under microwave irradiation proceeded regioselectively to provide a library of novel 5-aza-7-deaza-adenines in good yields and purity. The developed method was demonstrated
开发了一种高效,高选择性的4-氨基咪唑并[1,2- a ] [1,3,5]三嗪的多组分合成方法,该化合物是腺嘌呤的5-aza-7-deaza-isosteres。2-氨基咪唑,原甲酸三乙酯和氰酰胺在微波辐射下的反应选择性进行,从而以良好的收率和纯度提供了新型5-氮杂-7-脱氮杂戊烯的文库。事实证明,所开发的方法在三种不同的单模微波反应堆中具有可扩展性和高度可重复性。提出了重排以解释反应的高选择性。