申请人:Novartis Crop Protection, Inc.
公开号:US06211381B1
公开(公告)日:2001-04-03
The invention relates to a process for preparing a compound of formula (I), in which X is CH or N, Y is NO2 or CN, Z is CHR3, O, NR3 or S, R1 and R2 are either each, independently of the other, hydrogen or unsubstituted or R4-substituted alkyl or together a two- or three-membered alkylene bridge or a two- or three-membered alkylene bridge in which one member is replaced by a hetero member selected from the group, consisting of NR5, O and S, R3 is H or unsubstituted or R4-substituted alkyl, R4 is an unsubstituted or substituted aryl or heteroaryl group, and R5 is H or alkyl, which comprises a) reacting a compound of formula (II) with a chlorinating agent or b1) initially reacting a compound of formula (IV) with a compound of formula (V) and b2) further reacting the compound of formula (II) obtainable thereby, with or without intermediate isolation, with a chlorinating agent, to intermediates used in this process, to the use of these intermediates and to a process for the preparation of these intermediates.
本发明涉及一种制备式(I)化合物的过程,其中X为CH或N,Y为NO2或CN,Z为CHR3,O,NR3或S,R1和R2分别是氢或未取代或R4取代的烷基,或者是一个二元或三元烷基桥或一个二元或三元烷基桥,其中一个成员被选择自羟基、氧和硫的杂原子取代,R3为氢或未取代或R4取代的烷基,R4为未取代或取代的芳基或杂芳基,R5为氢或烷基。包括a)将式(II)化合物与氯化剂反应,或b1)最初将式(IV)化合物与式(V)化合物反应,b2)进一步反应所得到的式(II)化合物,带或不带中间分离,与氯化剂反应,用于该过程中使用的中间体,以及制备这些中间体的过程。