Efficient microwave-assisted two-step procedure for the synthesis of 1,3-disubstituted-imidazo[1,5-a]quinazolin-5-(4H)-ones
作者:Flavia Jankowski、Valérie Verones、Nathalie Flouquet、Pascal Carato、Pascal Berthelot、Nicolas Lebegue
DOI:10.1016/j.tet.2009.11.025
日期:2010.1
A general method has been developed for the synthesis of 1,3-disubstituted-imidazo[1,5-a]quinazolin-5-(4H)-ones. This process involves initial microwave-assisted quinazolinone formation between anthranilamide and various Boc- or acylamino acids, followed by intramolecular cyclodehydration under acidic conditions. In the case of 3-monosubstituted-imidazoquinazolinones, the procedure needs the formation
已经开发了一种用于合成1,3-二取代-咪唑并[1,5-a]喹唑啉-5-(4H)-的通用方法。该过程涉及蒽酰胺与各种Boc或酰基氨基酸之间最初的微波辅助喹唑啉酮形成,然后在酸性条件下进行分子内环脱水。对于3-单取代的咪唑并喹唑啉酮,该过程需要通过Boc中间体的脱保护和甲酰化来形成甲酰胺衍生物。