The title compound 3 was synthesized from diethylguanidine nitrate（2） obtained from diethylamine, CaCN2 and HNO3. The mixture consisted of 0.5 mol 2, 0.55 mol acetonyl propionate, 3 g benzyltriethylammonium chloride...The title compound 3 was synthesized from diethylguanidine nitrate（2） obtained from diethylamine, CaCN2 and HNO3. The mixture consisted of 0.5 mol 2, 0.55 mol acetonyl propionate, 3 g benzyltriethylammonium chloride, and 44 g NaOH was refluxed for 4 hours to give 85 g 3, in yield 94.6%.展开更多
Synthesis steps of 4,5 diamino 6 hydroxy 2 mercaptopyrimidine were improved on cyclocondensation of ethyl cyanoacetate with thiourea,nitrosation and reduction to obtain the product in 89% yield with high purity on ind...Synthesis steps of 4,5 diamino 6 hydroxy 2 mercaptopyrimidine were improved on cyclocondensation of ethyl cyanoacetate with thiourea,nitrosation and reduction to obtain the product in 89% yield with high purity on industrial scale.展开更多
【目的】寻找具有除草活性及抑菌活性的新型化合物。【方法】以2-(2-硝基苯基)乙腈为原料,经缩合、氧化、还原、环化、取代5步反应,合成了5-(4,6-二甲氧基嘧啶-2-基)-1-取代-3,5-二氢苯并[e][1,4]氧氮杂卓-2(1H)-酮类化合物,对合成的化...【目的】寻找具有除草活性及抑菌活性的新型化合物。【方法】以2-(2-硝基苯基)乙腈为原料,经缩合、氧化、还原、环化、取代5步反应,合成了5-(4,6-二甲氧基嘧啶-2-基)-1-取代-3,5-二氢苯并[e][1,4]氧氮杂卓-2(1H)-酮类化合物,对合成的化合物进行核磁共振谱(1 H NMR)、质谱(MS)及元素分析,并分别测定合成衍生物的除草活性及抑菌活性。【结果】经1 H NMR、MS及元素分析确认,成功合成了15个新型的5-(4,6-二甲氧基嘧啶-2-基)-1-取代-3,5-二氢苯并[e][1,4]氧氮杂卓-2(1H)-酮类化合物5和6a^6n。生物活性试验结果表明,在450g/hm2的剂量条件下,目标化合物5、6a、6b和6c对芥菜,6m和6n对芥菜、反枝苋及小藜显示出30%~40%的除草活性。在200mg/L的质量浓度下,目标物6c、6h和6m对黄瓜白粉病表现出30%以上的抑菌活性。【结论】本研究合成的化合物具有一定的除草和抑菌活性,其结构具有进一步改造研究的价值。展开更多
文摘The title compound 3 was synthesized from diethylguanidine nitrate（2） obtained from diethylamine, CaCN2 and HNO3. The mixture consisted of 0.5 mol 2, 0.55 mol acetonyl propionate, 3 g benzyltriethylammonium chloride, and 44 g NaOH was refluxed for 4 hours to give 85 g 3, in yield 94.6%.
文摘Synthesis steps of 4,5 diamino 6 hydroxy 2 mercaptopyrimidine were improved on cyclocondensation of ethyl cyanoacetate with thiourea,nitrosation and reduction to obtain the product in 89% yield with high purity on industrial scale.
基金2013年国家级大学生创新创业训练计划项目(201313256001)湖北师范学院硕士研究生创新科研基金项目(1051320130216)+1 种基金National Undergraduate Training Programs for Innovation and Entrepreneurship(201313256001)Postgraduate Innovation Scientific Research Foundation of Hubei Normal University(1051320130216)
文摘【目的】寻找具有除草活性及抑菌活性的新型化合物。【方法】以2-(2-硝基苯基)乙腈为原料,经缩合、氧化、还原、环化、取代5步反应,合成了5-(4,6-二甲氧基嘧啶-2-基)-1-取代-3,5-二氢苯并[e][1,4]氧氮杂卓-2(1H)-酮类化合物,对合成的化合物进行核磁共振谱(1 H NMR)、质谱(MS)及元素分析,并分别测定合成衍生物的除草活性及抑菌活性。【结果】经1 H NMR、MS及元素分析确认,成功合成了15个新型的5-(4,6-二甲氧基嘧啶-2-基)-1-取代-3,5-二氢苯并[e][1,4]氧氮杂卓-2(1H)-酮类化合物5和6a^6n。生物活性试验结果表明,在450g/hm2的剂量条件下,目标化合物5、6a、6b和6c对芥菜,6m和6n对芥菜、反枝苋及小藜显示出30%~40%的除草活性。在200mg/L的质量浓度下,目标物6c、6h和6m对黄瓜白粉病表现出30%以上的抑菌活性。【结论】本研究合成的化合物具有一定的除草和抑菌活性,其结构具有进一步改造研究的价值。
