作者:Santos Fustero、Julio Piera、Juan F. Sanz-Cervera、Silvia Catalán、Carmen Ramírez de Arellano
DOI:10.1021/ol049668z
日期:2004.4.1
and convenient two-step synthesis of new fluorinated uracils is described. The first step involves the condensation of an ester enolate with a fluorinated nitrile to furnish fluorinated beta-enamino esters. In turn, these compounds react with organic isocyanates or isothiocyanates to give C-6 fluorinated uracils or thiouracils, respectively, in excellent yields. This synthesis has been successfully adapted
[反应:见正文]描述了一种新型氟化尿嘧啶的高效便捷的两步合成方法。第一步涉及将酯烯酸酯与氟化腈缩合以提供氟化β-烯胺酯。继而,这些化合物与有机异氰酸酯或异硫氰酸酯反应,以优异的产率分别得到C-6氟化的尿嘧啶或硫尿嘧啶。该合成已成功地适应了具有高多样性的固相条件,从而促进了小的(硫代)尿嘧啶文库的创建。