Efficient and Convenient Synthesis of Pyrrolo[1,2-<i>a</i>]quinazoline Derivatives with the Aid of Tin(II) Chloride
作者:Manman Wang、Guolan Dou、Daqing Shi
DOI:10.1021/cc100062e
日期:2010.7.12
An efficient, convenient, one-pot synthesis of 2,3,3a,4-tetrahydropyrrolo[1,2-a]quinazolin-5(1H)-one and 2,3,3a,4-tetrahydropyrrolo[1,2-a]quinazoline-1,5-dione was accomplished in good yields via the novel reductive cyclization of 2-nitrobenzamides with haloketones or keto acids mediated by SnCl2·2H2O system. A variety of substrates can participate in the process with good yields, making this methodology
2,3,3a,4-四氢吡咯并[1,2 - a ]喹唑啉-5(1 H)-one和2,3,3a,4-四氢吡咯并[1,2-通过由SnCl 2 ·2H 2 O系统介导的2-硝基苯甲酰胺与卤代酮或酮酸的新型还原性环化反应,可以成功地制得]]喹唑啉-1,5-二酮。多种底物可以高收率参与该过程,从而使该方法适用于药物发现工作中的文库合成。