A process for preparing 2-cyclopentenone derivative represented by the formula ##STR1## wherein A is ##STR2## and R.sub.2 is lower straight-chain or branched-chain alkyl, alkenyl or aralkyl, and perfume composition containing the derivative.
一种制备式为##STR1##的2-
环戊酮衍
生物的方法,其中A为##STR2##,R.sub.2为较低的直链或支链烷基,烯基或芳基烷基,并且含有该衍
生物的香
水组合物。