Construction of 1,2-dihydro-1,3,5-triazines <i>via</i> reactions involving amidines
作者:Honghong Guo、Jianying Lin、Qiang Liu、Xing Li
DOI:10.1039/d3ob00283g
日期:——
synthesized through three sets of reactions of amidines with, respectively, paraformaldehyde, aldehydes and N-arylnitrones under different conditions. The catalysts used in these three reactions were Cu(OAc)2, ZnI2 and CuCl2·2H2O, respectively. Most of the substrates tested for these reactions provided the target products in moderate to good yields. In the reactions involving paraformaldehyde, Cu(OAc)2 also
1,2-二氢-1,3,5-三嗪类化合物通过不同条件下的三组脒分别与多聚甲醛、醛类和N-芳基硝酮反应合成。这三个反应中使用的催化剂分别为Cu(OAc) 2、ZnI 2和CuCl 2 ·2H 2 O。为这些反应测试的大多数底物以中等到良好的收率提供了目标产物。在涉及多聚甲醛的反应中,Cu(OAc) 2还在催化反应过程中加速多聚甲醛释放甲醛。在涉及硝酮的反应中,CuCl 2 ·2H 2O不仅催化了主要反应的正常进行,还促进了硝酮类反应生成亚硝基化合物和醛类。