申请人:——
公开号:US20030013896A1
公开(公告)日:2003-01-16
Disclosed is a novel method for producing pyrone derivatives of general formula (I), wherein X
1
means halogen-methyl, whereby an acetoacetic acid derivative of general formula (II), wherein X
1
has the aforementioned meaning and X
2
means chlorine or bromine, is treated with Lewis acid and is subsequently converted into the desired product by means of water.
本发明公开了一种生产一般式(I)的吡喃衍生物的新方法,其中X1表示卤代甲基,通过将一般式(II)的乙酰乙酸衍生物进行处理,其中X1具有上述含义,X2表示氯或溴,然后用Lewis酸处理,并通过水转化为所需的产物。