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    • 86. 发明授权
    • Diazonium salts which are intermediates for 3-substituted pyridines
    • 作为3-取代吡啶的中间体的重氮盐
    • US06710180B2
    • 2004-03-23
    • US10320591
    • 2002-12-16
    • Dean Kent Hoglen
    • Dean Kent Hoglen
    • C07D21376
    • C07D213/77C07D213/63
    • The present invention relates to 3-substituted and 2,3-disubstituted pyridine compounds which are useful as intermediates in the synthesis of pyridylsulfonylurea herbicides. The invention also relates to arylation of alcohols using a pyridinediazonium salt. More particularly the arylation process of the instant invention relates to the synthesis of 2,3-disubstituted pyridine compounds via anhydrous diazotization of 3-amninopyridines to form a diazonium salt intermediate that is then reacted with the appropriate alcohol to produce the desired product. The invention additionally relates to pyridine-3-diazonium salt intermediates.
    • 本发明涉及可用作合成吡啶基磺酰脲除草剂的中间体的3-取代的和2,3-二取代的吡啶化合物。 本发明还涉及使用吡啶并重氮盐的醇的芳基化。 更具体地,本发明的芳基化方法涉及通过3-氨基吡啶的无水重氮化合成2,3-二取代的吡啶化合物以形成重氮盐中间体,然后与适当的醇反应以产生所需产物。 本发明还涉及吡啶-3-重氮盐中间体。