Synthesis and biological activities of novel 1,3-bis[substituted-pyridyl (thiazolyl)methyl]-2-substitutedmethylideneimidazolidines
作者:Man Yan、Zai-Gang Luo、Xiao-Fei Zhu、De-Qing Shi
DOI:10.1002/jhet.5570450415
日期:2008.7
A series of novel 1,3-dissubstitutedpyridyl(thiazolyl)methyl-2-substituted-methylideneimidazolidine derivatives 2 and 4 were designed and synthesized via the N-alkylation of the disubstituted heterocyclic ketene aminal derivative 1. When 1 (R = CN, R' = COOC2H5) was used as the starting materials, mono N-alkylated reaction can take place in good yields owing to the presence of the intramolecular hydrogen
通过二取代的杂环烯酮缩醛衍生物1的N-烷基化反应,设计合成了一系列新型的1,3-二取代的吡啶基(噻唑基)甲基-2-取代的亚甲基亚咪唑烷衍生物2和4。当使用1(R = CN,R′= COOC 2 H 5)作为起始原料时,由于分子内氢键的存在,单N-烷基化反应可以高产率进行。但是,对于1(R = R’= CN),难以获得纯的单N-烷基化产物。目标化合物的结构通过IR,1 H NMR,EI-MS和元素分析,在2c情况下,通过单晶X射线衍射。初步的生物测定表明,某些标题化合物具有中等的杀真菌和杀虫活性。