A 2,2-dimethylcyclopropanecarboxylic acid derivative having the formula: ##STR1## wherein R.sup.1 is an alkyl group or an aryl group, R.sup.2 is a hydrogen atom, an acyl group, a sulfonyl group or an alkyl group, and each of X.sup.1 and X.sup.2 is a halogen atom.
具有以下结构式的2,2-二
甲基环丙烷羧酸衍
生物:其中R.sup.1是烷基或芳基,R.sup.2是氢原子、酰基、磺酰基或烷基,X.sup.1和X.sup.2分别是卤素原子。