Compounds of the formula: ##STR1## in which R.sup.1 is H, halogen, alkyl or alkoxy; R.sup.2 is H, halogen, alkyl or CF.sub.3 ; R.sup.3 is H, Cl, Br, alkyl or CN; R.sup.4 is H, halogen, alkyl, phenyl or halophenyl; and R.sup.5 is H, alkyl, alkinyl or CN; are starting materials for the manufacture of valuable insecticides of the pyrethroid type.
                            式为##STR1##的化合物,其中R.sup.1是氢,卤素,烷基或烷氧基; R.sup.2是氢,卤素,烷基或CF.sub.3; R.sup.3是氢,
氯,
溴,烷基或CN; R.sup.4是氢,卤素,烷基,苯基或卤代苯基; R.sup.5是氢,烷基,炔基或CN; 是制造有价值的拟
除虫菊酯类杀虫剂的起始材料。