One-Pot, Atom and Step Economy (PASE) Assembly of Trifluoromethylated Pyrimidines from CF<sub>3</sub>
-Ynones
作者:Alexey R. Romanov、Alexander Yu. Rulev、Igor A. Ushakov、Vasiliy M. Muzalevskiy、Valentine G. Nenajdenko
DOI:10.1002/ejoc.201700727
日期:2017.8.2
Highly efficient synthesis of 6-trifluoromethylated pyrimidines based on reaction of CF3-ynones with nitrogen 1,3-binucleophiles was developed. One-pot assembly of pyrimidine core proceeds by the cascade route via aza-Michael addition - intramolecular cyclization - dehydration sequence giving the target heterocycles in excellent yields (up to 97%). When acetamidine was used as a binucleophile, the
开发了基于CF3-炔酮与1,3-双亲核试剂氮反应的6-三氟甲基化嘧啶的高效合成方法。嘧啶核的一锅组装通过aza-Michael加成的级联途径进行-分子内环化-脱水序列以优异的收率(最高97%)得到目标杂环。当将乙am用作双亲核试剂时,观察到意想不到的向乙two中添加了两当量的CF3-炔酮。