Green synthesis and crystal structure of 4,7-diaryl-2-oxo(thio)-1,2,3,4,5,6,7,8-octahydroquinazoline-5-one derivatives
作者:Guang-Fan Han、Bin Cui、Li-Zhuang Chen、Rui-Hua Wang、Yan Jin
DOI:10.1002/jhet.541
日期:2011.3
simple workup procedure. The structures of all compounds were characterized by elemental analysis, IR, MS, and 1H NMR. The crystal and molecular structure of 4‐(4′‐chlorophenyl)‐7‐(4′‐methoxyphenyl)‐1,2,3,4,5,6,7,8‐octahydroquinazoline‐2,5‐dione 5m have been determined by single crystal X‐ray diffraction analysis. The crystal of compound 5m belongs to monoclinic with space group P‐21/c, a = 1.4353 (4) nm
一种绿色便捷的方法,可以从适当的芳族醛和芳烃合成新的4,7-二芳基-2-氧代(硫代)1,2,3,4,5,6,7,8-八氢喹唑啉-5-酮衍生物描述了在水中存在稀HCl作为催化剂的5‐芳基-1,3-环己二酮与尿素或硫脲的关系。该方法具有许多优点,例如环境友好,成本低,产率高以及后处理程序简单。所有化合物的结构均通过元素分析,IR,MS和1 H NMR表征。晶体和4-(4'-氯苯基)-7-(4'-甲氧基苯基)-1,2,3,4,5,6,7,8-全octahydroquinazoline -2,5-二酮分子结构5米已经通过单晶X射线衍射分析确定。复合晶体5m属于单斜晶,空间群为P -2 1 / c,a = 1.4353(4)nm,b = 1.4011(4)nm,c = 0.9248(3)nm,α= 90.00°,β= 101.242(6)°, γ= 90.00°,Z= 4,V= 1.8241(9)nm