A new microwave-assisted, three-component reaction of 5-aminopyrazole-4-carboxylates: Selective synthesis of substituted 5-aza-9-deaza-adenines
作者:Felicia Phei Lin Lim、Nathan R. Halcovitch、Edward R.T. Tiekink、Anton V. Dolzhenko
DOI:10.1016/j.tet.2018.02.054
日期:2018.4
A series of 5-aza-9-deaza- analogues of purine was effectively prepared using highly selective annulation of 1,3,5-triazine ring onto 5-aminopyrazole-4-carboxylates via a one-pot, multicomponent, microwave-assisted approach. The products were obtained in good yields and high purity. This catalyst-free method was demonstrated to be scalable and highly reproducible in different microwave reactors. Some
通过一锅,多组分,微波辅助方法,将1,3,5-三嗪环高选择性环合到5-氨基吡唑-4-羧酸酯上,可以有效地制备一系列嘌呤的5-aza-9-deaza-类似物。以高收率和高纯度获得产物。事实证明,这种无催化剂的方法在不同的微波反应器中具有可扩展性和高度重现性。使用动态NMR光谱和X射线晶体学对制备的化合物的某些结构特征进行了详细研究。