The reaction is performed in the presence of a base such as sodium hydride, sodium methoxide, sodium ethoxide, potassium carbonate, sodium carbonate, potassium hydrogencarbonate, sodium hydrogencarbonate, etc.Now, the compounds I of this invention wherein X is the group shown by ##STR22## and Y is an ethylene group which may be substituted by lower alkyl group or a vinylene group which may be subs