[EN] PROCESS FOR THE PREPARATION OF ISOXAZOLINE DERIVATIVES<br/>[FR] PROCÉDÉ DE PRÉPARATION DE DÉRIVÉS D'ISOXAZOLINE
申请人:SYNGENTA PARTICIPATIONS AG
公开号:WO2011104089A1
公开(公告)日:2011-09-01
The present invention relates to processes for the preparation of compounds of formula IB wherein A1, A2, A3, A4, L, Y1, Y2, R1, R2, R3, R4 and R5 are as defined in the claims, comprising reacting a compound of formula (II) wherein Y1, Y2, L, A1, A2, R1, R2, R3, R4 and R5 are as defined for the compound of formula (I); with hydroxylamine in the presence of water, a base and a chiral phase transfer catalyst, which chiral phase transfer catalyst is a quinine derivative. The invention also relates to compounds of formula IB and enantiomerically enriched mixtures comprising compounds of formula IB.
本发明涉及制备式IB化合物的过程,其中A1、A2、A3、A4、L、Y1、Y2、R1、R2、R3、R4和R5如权利要求中所定义,包括在水、碱和手性相转移催化剂存在下,将式(II)化合物与羟胺反应,其中Y1、Y2、L、A1、A2、R1、R2、R3、R4和R5如式(I)化合物所定义;所述手性相转移催化剂为奎宁衍生物。该发明还涉及式IB化合物和富集对映体混合物,其中包括式IB化合物。