A novel, high-yielding, one-step synthesis of 2-chloroquinazolin-4-ols and analogous bicycles from 2-aminoamides using thiophosgene is described. The scope of the reaction includes aminothioamides, amino acids, and fused heterocycle derivatives, furnishing quinazolines, oxazinones, and substituted fused pyrimidine bicycles, respectively. On the basis of observed results with substituted analogues,
描述了一种使用
硫光气从2-
氨基酰胺合成
2-氯喹唑啉-4-醇和类似自行车的新型,高产一步法。反应范围包括
氨基
硫代酰胺,
氨基酸和稠合的杂环衍
生物,分别提供
喹唑啉,恶嗪酮和取代的稠合
嘧啶自行车。根据用取代的类似物观察到的结果,认为这种转变的机理是通过异
硫氰酸酯中间体发生的,然后是
硫光气在
硫醇中间体上的意外的
化学选择性反应。