A composition comprising at least 60% by weight, based on the weight of the composition, of a cyclopentanone or cyclopentanol compound having 2,5-dicyclopentylidene substituents, 2,5-dicyclopentyl substituents or 2-cyclopentylidene-5-cyclopentyl substituents. This composition is useful as perfume emitting floral fragrance. 2,5-Dicyclopentylidenecyclopentane (compound 4) is prepared by reaction of 2-cyclopentylidenecyclopentanone with cyclopentanone. 2,5-Dicyclopentylcyclopentanone (compound 5) and 2,5-dicyclopentylidenecyclopentanol (compound 6) are prepared by reduction of compound 4. 2,5-Dicyclopentylcyclopentanol (compound 7) is prepared by reduction of compound 5 or compound 6.
该组成物包括至少60%的
环戊酮或
环戊醇化合物,其基于组成物的重量,具有2,5-二环戊基亚
甲基取代基,2,5-二环戊基取代基或2-环戊基亚
甲基-5-环戊基取代基。该组成物可用作散发花香的香
水。2,5-二环戊基
亚甲基环戊烷(化合物4)通过2-环戊基亚
甲基环戊酮与
环戊酮反应制备。2,5-二环戊基
环戊酮(化合物5)和2,5-二环戊基亚
甲基环戊醇(化合物6)通过还原化合物4制备。2,5-二环戊基
环戊醇(化合物7)通过还原化合物5或化合物6制备。