SULFONYL HYDRAZIDE COMPOUNDS AND A REGIO-SELECTIVE PROCESS TO PREPARE 4-AROYL PYRAZOLE DERIVATIVES
申请人:E. I. DU PONT DE NEMOURS AND COMPANY
公开号:US20170044109A1
公开(公告)日:2017-02-16
Disclosed are compounds of Formula I, including all stereoisomers, (N-oxides), and salts thereof, wherein A and R are as defined in the disclosure.
Also disclosed is a method for preparing a compound of Formula I, comprising reacting a compound of Formula II with an aroyl enolate salt of Formula III in the presence of an acid in an aqueous solvent mixture, wherein A, R and M are as defined in the disclosure.
Also disclosed is a method for preparing a compound of Formula IV, comprising reacting a compound of Formula I with an aldehyde of Formula V in the presence of a secondary amine salt, wherein A, B and R are as defined in the disclosure.
本发明涉及公式I的化合物,包括所有立体异构体,(N-氧化物)和其盐,其中A和R如所述。还揭示了一种制备公式I的化合物的方法,包括在水溶剂混合物中,在酸的存在下,将公式II的化合物与公式III的芳酰基烯醇盐反应,其中A,R和M如所述。还揭示了一种制备公式IV的化合物的方法,包括在二级胺盐的存在下,将公式I的化合物与公式V的醛反应,其中A,B和R如所述。