Ketone derivatives represented by the general formula (I) ##STR1## where R is --CH.sub.2 R.sup.1 (where R.sup.1 is a hydrogen atom or an alkyl group), a halogen-substituted alkyl group, a cyano-substituted alkyl group, a cyclopropyl group, ##STR2## (where R.sup.2 is a hydrogen atom or an alkyl group and Y is a hydrogen atom or a halogen atom) or ##STR3## (where R.sup.3 is a hydrogen atom, an alkyl group, a phenyl group or a halogen-substituted phenyl group, and Z is a hydrogen atom or a halogen atom), and X is an oxygen atom or a sulfur atom.
一般式(I)所代表的酮衍
生物为##STR1##其中R为--CH.sub.2 R.sup.1(其中R.sup.1为氢原子或烷基),卤代烷基,
氰基取代烷基,环丙基,##STR2##(其中R.sup.2为氢原子或烷基,Y为氢原子或卤原子)或##STR3##(其中R.sup.3为氢原子,烷基,苯基或卤代苯基,Z为氢原子或卤原子),X为氧原子或
硫原子。