New alicyclic ketoesters having the generic formula ##STR1## wherein R represents a hydrocarbon radical containing from 4 to 8 carbon atoms, and R' represents an alkyl radical containing from 1 to 2 carbon atoms, are prepared, in one embodiment, by condensing the methyl or ethyl ester of propane-1,2,3-tricarboxylic acid with methyl or ethyl esters of 2-bromo acids containing from 6 to 9 carbon atoms, and hydrolyzing, decarboxylating and re-esterifying the resulting cyclic keto-triesters. The new compounds have olfactory properties and are useful in the production of a great variety of perfumes.
新的
脂环酮酯化合物具有通用式## STR1 ##,其中R代表含有4至8个碳原子的碳氢基团,R'代表含有1至2个碳原子的烷基基团。在一种实施例中,通过将
丙烷-1,2,3-
三羧酸的甲基或
乙酯与含有6至9个碳原子的2-
溴酸甲基或
乙酯缩合,并
水解、脱羧和重新酯化所得的环状酮三酯来制备。这些新化合物具有嗅觉特性,并可用于生产各种香
水。