申请人:NUTRICHEM COMPANY LIMITED
公开号:US20160200687A1
公开(公告)日:2016-07-14
The present invention discloses a method for preparing azoxystrobin intermediates represented by formulae (1) and (2), comprising: controlling a compound represented by formula (3) to contact with sodium methoxide and 4,6-dichloropyrimidine, to obtain a mixture of intermediates represented by formulae (1) and (2), in the existence of a catalyst, the catalyst is an azabicyclic compound or its salt. The present invention further discloses a method for preparing azoxystrobin, comprising: controlling the intermediate represented by formula (2) provided in the present invention to react with 2-cyanophenol or its salt under the catalytic action of an azabicyclic compound or its salt, to obtain an azoxystrobin compound represented by formula (4). The method provided in the present invention has advantages including high transformation ratio, high product purity, easy and convenient operation, and environmental friendliness.
本发明揭示了一种制备由式(1)和(2)表示的阿托霉唑中间体的方法,包括:控制由式(3)表示的化合物与甲氧基钠和4,6-二氯嘧啶接触,以在存在催化剂的情况下获得由式(1)和(2)表示的中间体的混合物,其中催化剂为吡啶环化合物或其盐。本发明还揭示了一种制备阿托霉唑的方法,包括:控制本发明提供的由式(2)表示的中间体,在吡啶环化合物或其盐的催化作用下与2-氰基苯酚反应,以获得由式(4)表示的阿托霉唑化合物。本发明提供的方法具有高转化率、高产品纯度、操作简便方便和环保友好等优点。