Cu<sup>II</sup>/TEMPO-Promoted One-Pot Synthesis of Highly Substituted Pyrimidines from Amino Acid Esters
作者:Nini Zhou、Tao Xie、Zhongle Li、Zhixiang Xie
DOI:10.1002/chem.201405447
日期:2014.12.22
A novel, Cu(OAc)2/TEMPO promoted one‐step approach for the preparation of fully substituted pyrimidines from readily available amino acid esters has been described. In this reaction, the amino acid esters act as the only NC sources for the construction of corresponding pyrimidines. The mechanism of this process includes oxidative dehydrogenation, the generation of an imine radical, and a formal [3+3]
已经描述了一种新型的Cu(OAc)2 / TEMPO促进的一步法,该方法可从容易获得的氨基酸酯中制备完全取代的嘧啶。在该反应中,氨基酸酯充当n只有 C源码对应嘧啶的结构。该过程的机理包括氧化脱氢,亚胺基的产生和正式的[3 + 3]环加成。事实证明,该方法是一种用于合成嘧啶的高原子经济性和简便易行的策略,并且以中等到良好的产率提供了被各种官能团取代的各种底物。