Synthesis of substituted 2-amino-4-quinazolinones via ortho-fluorobenzoyl guanidines
作者:M. Jonathan Fray、John P. Mathias、Carly L. Nichols、Yvonne M. Po-Ba、Hayley Snow
DOI:10.1016/j.tetlet.2006.06.168
日期:2006.9
either directly or indirectly with heterocycles (e.g., pyridyl, thiazolyl, pyrazolyl) followed by hydrolysis of the nitrile gave a series of o-fluorobenzoic acid derivatives. Condensation with a set of six N,N-disubstituted guanidines followed by base-promoted ring closure afforded 2-amino-4-quinazolinone derivatives.
描述了一种新的途径来制备12个取代的2-氨基-4-喹唑啉酮。从2,6-二氟-4-甲氧基苄腈开始,用杂环(例如,吡啶基,噻唑基,吡唑基)直接或间接取代一个氟原子,然后水解腈,得到一系列邻氟苯甲酸衍生物。与一组六个N,N-二取代的胍缩合,然后通过碱促进的闭环,得到2-氨基-4-喹唑啉酮衍生物。