Method for the production of oxazoles by condensing aromatic aldehydes with α-ketoximes to N-oxides and then reacting the same with activated acid derivatives
申请人:Sanofi-Aventis Deutschland GmbH
公开号:US07825144B2
公开(公告)日:2010-11-02
The invention is related to a process for preparing compounds of the formula IV by means of conversion of aromatic aldehydes of the formula I using α-ketoximes of the formula II via N-oxides of the formula III to halomethyloxazoles of the formula IV,
wherein R1, R2, R3, R4, R5, R6, R7, R8, X1, X2, X3, o, n1 and n2 are as defined herein.
本发明涉及一种通过使用公式I的芳香醛经由公式II的α-酮肟转化为公式III的N-氧化物,再进一步转化为公式IV的卤代甲氧唑化合物的制备方法,其中R1、R2、R3、R4、R5、R6、R7、R8、X1、X2、X3、o、n1和n2如本文所定义。