New Approach to the Practical Synthesis of Tri- or Tetrasubstituted Pyrimidine Derivatives: A Four-Component Coupling Reaction from a Functionalized Silane, Two Types of Aromatic Nitriles, and Acetals
作者:Norio Sakai、Youichi Aoki、Toshiaki Sasada、Takeo Konakahara
DOI:10.1021/ol051901l
日期:2005.10.1
[reaction: see text] A new approach to the synthesis of tri- or tetrasubstituted pyrimidines by a four-component coupling reaction using a functionalized silane, two types of aromatic nitriles, and an acetal is described. The efficient transformation of the pyrimidine framework consisting of an isoxazolyl ring and an ethoxy group to the 1,3,8-triazanaphthalene skeleton also proceeded in nearly quantitative
[反应:见正文]描述了一种新的方法,该方法使用官能化的硅烷,两种芳香族腈和一种乙缩醛通过四组分偶联反应合成三或四取代的嘧啶。由异恶唑基环和乙氧基组成的嘧啶骨架向1,3,8-三氮杂萘骨架的有效转化也几乎以定量的方式进行。