[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。