[EN] PROCESS FOR THE PREPARATION OF PYRAZOLE CARBOXYLIC ACID AMIDES<br/>[FR] PROCÉDÉ DE SYNTHÈSE D'AMIDES D'ACIDE PYRAZOLECARBOXYLIQUE
申请人:SYNGENTA PARTICIPATIONS AG
公开号:WO2011131545A1
公开(公告)日:2011-10-27
The invention relates to a process for the preparation of the compound of formula (I), which process comprises a) reacting a compound of formula (II), wherein X is chloro or bromo, with an organometallic species in an inert atmosphere to a halobenzyne of formula (X), reacting the halobenzyne of formula X so formed with cyclopentadiene to (III), b) reacting III in the presence of an inert solvent with an oxidant to (IV), c) reacing IV in the presence of a Lewis acid and a hydride source to (V), d) reacting V in the presence of an oxidizing agent, a base and an inert solvent to (VI), e) converting VI in the presence of a phosphane and CCl4 or CHCl3 to (VII), and either f1) reacting VII with NH3 in the presence of a catalyst to the compound of formula (VIII); and g) reacting VIII in the presence of a base with a compound of formula (IX), to the compound of formula (I); or f2) reacting the compound of formula (VII), in the presence of a solvent, a base, a copper catalyst and at least one ligand with the compound of formula (IXa), to the compound of formula (I).
本发明涉及一种制备式(I)化合物的方法,该方法包括a)在惰性气氛下将式(II)化合物(其中X为氯或溴)与有机金属物种反应,得到式(X)的卤代苯基,将所得的式X卤代苯基与环戊二烯反应得到式(III),b)在惰性溶剂存在下,将III与氧化剂反应得到式(IV),c)在路易斯酸和氢化物源存在下,将IV反应得到式(V),d)在氧化剂、碱和惰性溶剂存在下,将V反应得到式(VI),e)在膦和CCl4或CHCl3存在下,将VI转化为式(VII),并且f1)在催化剂存在下,将VII与NH3反应得到式(VIII),并且g)在碱存在下,将VIII与式(IX)化合物反应得到式(I)化合物;或f2)在溶剂、碱、铜催化剂和至少一种配体存在下,将式(VII)与式(IXa)化合物反应得到式(I)化合物。