Oxone-mediated annulation of 2-aminobenzamides and 1,2-diaminobenzenes with<i>sec</i>-amines<i>via</i>imine-<i>N</i>-oxides: new syntheses of 2,3-dihydroquinazolin-4(1<i>H</i>)-ones and 1<i>H</i>-benzimidazoles
作者:Vinodkumar Sriramoju、Srinivas Kurva、Sridhar Madabhushi
DOI:10.1039/c7nj04939k
日期:——
An efficient and mild method for the preparation of 2,3-dihydroquinazolin-4(1H)-ones and 1H-benzimidazoles by the oxone-mediated reaction of sec-amines via imine-N-oxides with 2-amino-N-substituted benzamides and 1,2-diaminobenzenes respectively in THF–water (2 : 1) at ambient temperature is described.
2,3-二氢喹唑啉4的制备一种有效的和温和的方法(1 ħ) -酮和1- ħ通过的过硫酸氢钾介导的反应-benzimidazoles秒-胺通过亚胺Ñ -oxides与2-氨基- ñ -描述了室温下分别在THF-水(2:1)中的取代的苯甲酰胺和1,2-二氨基苯。