Compounds of the formula ##STR1## in which Het represents an optionally substituted aromatic heterocycle having a sulphur or oxygen hetero atom and attached via a ring carbon atom, and X is halogen, alkyl, alkaryl, cyano, alkoxy, mono- or di-alkylamino, acyloxy or aryl, are useful intermediates to a range of cyclopropane derivatives. Processes for their preparation and their use in further synthetic processes are also described.
式为##
STR1##的化合物中,Het代表一个可选择地取代的含有
硫或
氧杂原子的芳香杂环,通过环中的
碳原子连接,X为卤素、烷基、烷基芳基、
氰基、烷
氧基、单烷基或二烷基
氨基、酰
氧基或芳基,对于一系列
环丙烷衍
生物是有用的
中间体。还描述了它们的制备过程及在进一步合成过程中的用途。