The present invention provides a process for preparing a spiroketal derivative, via an intermediate represented by Formula (VI):
wherein variable groups and numbers are as defined in the specification, which can be produced from dihalobenzene derivatives in one pot reaction.
                            本发明提供了一种通过式(VI)代表的中间体制备螺酮衍
生物的工艺:
其中可变基团和数字如说明书中所定义,可在一锅反应中从二卤代苯衍
生物制得。