Optically active bisoxazoline compounds represented by the general formula (1), a process for producing the compounds, and a process for producing cyclopropanecarboxylic esters by using the same: ##STR00001## wherein R.sup.1 and R.sup.2 are the same and each represents C.sub.1-6 alkyl, substituted or unsubstituted aralkyl, or substituted or unsubstituted phenyl or R.sup.1 and R.sup.2 are bonded each other together with the carbon atom of oxazoline ring to which they are bonded to form a ring; R.sup.3 is substituted or unsubstituted naphthyl; R.sup.4 and R.sup.5 are the same and each represent hydrogen or C.sub.1-6 alkyl, or R.sup.4 and R.sup.5 are bonded each other together with the carbon atom to which they are bonded to form a cycloalkyl ring having 3 to 6 carbon atoms; and * represents an asymmetric center.

 
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