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3-取代和2,3-双取代
吡啶化合物,可用作合成
吡啶磺酰
脲除草剂的中间体。本发明还涉及使用
吡啶重氮盐对醇进行芳基化反应。特别是,本发明的芳基化过程涉及通过3-
氨基吡啶的无
水重氮化形成重氮盐中间体,然后与适当的醇反应,以产生所需的产物的2,3-双取代
吡啶化合物的合成。本发明还涉及
吡啶-3-重氮盐中间体。