The present invention relates to a novel method for preparing methylene-1,3-dioxolanes of the general formula (1)
in which R
1
and R
2
have the meanings stated in the description. Methylene-1,3-dioxolanes are important intermediates for preparing pyrazoles and anthranilic acid amides, which may be used as insecticides.
本发明涉及一种制备通式(1)中R1和R2具有所述含义的亚甲基-1,3-二氧兰的新方法。亚甲基-1,3-二氧兰是制备
吡唑和
蒽酰胺的重要中间体,可用作
杀虫剂。