Synthesis and fungicidal activity of novel 2-aryl-3-(1,3,4-thiadiazolyl)-6(8)-methyl-1,3-benzoxazines
作者:Zi-long Tang、Zan-wen Xia、Shu-hong Chang、Zhao-xu Wang
DOI:10.1016/j.bmcl.2015.05.010
日期:2015.8
A class of novel 2-aryl-3-(1,3,4-thiadiazolyl)-6(8)-methyl-1,3-benzoxazines was prepared by reactions of 2-methyl-6-((1,3,4-thiadiazolylamino)methyl)phenols or 4-methyl-2-((1,3,4-thiadiazolylamino)methyl)phenols and 2- or 4-nitrobenzaldehyde in the presence of TMSCl in refluxing toluene. The electron-donating methyl group on the benzene ring played an essential role on the reactivity of the substituted
通过2-甲基-6-((1,3,4在回流的甲苯中,在TMSC1存在下,将2-噻二唑基氨基)苯酚或4-甲基-2-((1,3,4-噻二唑基氨基)甲基)苯酚和2-或4-硝基苯甲醛。DFT计算证明,苯环上的给电子甲基对取代酚的反应性起着至关重要的作用。还初步评估了所得产物的杀真菌活性,其中大多数显示出中等至良好的杀真菌活性。特别地,化合物6f在25μg/ mL的浓度下显示出针对核盘菌和灰葡萄孢的98.0%的活性。