Synthesis and Herbicidal Activity of 2-Alkyl(aryl)-4-amino-3-[alkyl(alkoxy)carbonyl]-5-cyano-6-[(3-trifluoromethyl)phenoxy]-pyridines
作者:Yue-E Zhai、De-Qing Shi
DOI:10.1002/jhet.1591
日期:2013.7
yl]‐5‐cyano‐6‐[(3‐trifluoromethyl)phenoxy]‐pyridines was designed and synthesized by the multistep reactions. N,S‐acetal 1 reacted with 2 to obtain multisubstituted pyridines 3 in the presence of zinc nitrate as the catalyst. The target compounds 5a, 5b, 5c, 5d, 5e, 5f, 5g, 5h, 5i, 5j, 5k, 5l were formed by the oxidation of 3, followed by the substitution with 3‐(trifluoromethyl)phenol in the presence
为了找到新型的漂白除草剂先导化合物,使用了一系列新型的2-烷基(芳基)-4-氨基-3- [烷基(烷氧基)羰基] -5-氰基-6 [(3-三氟甲基)苯氧基]吡啶。通过多步反应设计合成。N,S-缩醛1在硝酸锌作为催化剂的情况下与2反应获得多取代的吡啶3。目标化合物5a,5b,5c,5d,5e,5f,5g,5h,5i,5j,5k,5l通过3的氧化形成碳,然后在碳酸钾存在下用3-(三氟甲基)苯酚取代。通过IR,1 H NMR,EI-MS和元素分析确认了它们的结构。初步的生物测定表明,其中一些对浓度为100 mg / L的双子叶杂草甘蓝型油菜具有中等程度的除草活性。