Facile synthesis and herbicidal activity of novel multisubstituted pyridine derivatives
作者:Qingyun Ren、Wenyan Mo、Ling Gao、Hongwu He、Yucheng Gu
DOI:10.1002/jhet.296
日期:——
catalytic sodium wolframate led to the formation of 6-alkylsulfonylpyridine derivatives 5, which could be further derivatized in the 6-position by nucleophilic reactions with phenols or amines to give multisubstituted pyridine compounds 8. Bioassays indicated that some of the compounds of the type 8 have good herbicidal activity at a dose of 100 mg/L on the roots of oil rape and barnyard grass. J. Heterocyclic
烯酮Ñ,š -acetals与β酮酯在锌的存在下(NO反应3)2 ·6H 2 O为催化剂,在乙醇溶剂中,得到6-alkylsulfanylpyridines 4以良好的收率而无需复杂的纯化程序。在催化性钨酸钠存在下用过氧化氢水溶液氧化化合物4导致形成6烷基磺酰基吡啶衍生物5,该衍生物可以通过与酚或胺的亲核反应在6位进一步衍生化,得到多取代的吡啶化合物8。生物测定表明,某些类型的化合物8在油菜和n草的根部具有良好的除草活性,剂量为100 mg / L。J.杂环化学。(2010)。