General and Rapid Pyrimidine Condensation by Addressing the Rate Limiting Aromatization
作者:Daniel R. Fandrick、Delia Reinhardt、Jean-Nicolas Desrosiers、Sanjit Sanyal、Keith R. Fandrick、Shengli Ma、Nelu Grinberg、Heewon Lee、Jinhua J. Song、Chris H. Senanayake
DOI:10.1021/ol500886a
日期:2014.6.6
and activated olefins was addressed to provide for a general and rapid process. A strong solvent effect was elucidated to affect the rate for the initial alkoxide elimination from the intermediate Michael adduct wherein polar aprotic solvents demonstrate an addition controlled aromatization. Spectroscopic studies support a solvent dependent equilibrium between the amidine and alkoxide base wherein the
解决了在缩合方法中利用utilizing和活化的烯烃对嘧啶的限速芳构化,以提供一般和快速的方法。阐明了强溶剂作用以影响中间体迈克尔加合物中初始醇盐消除的速率,其中极性非质子溶剂表现出加成控制的芳构化。光谱研究支持the和醇盐碱之间的溶剂依赖性平衡,其中当强烈偏向toward阴离子的平衡时,芳构化速率最佳。