| 单词 | α-irone |
| 释义 | > as lemmasα-irone Originally: a fragrant oil obtained from orris root ( Iris germanica and other species). Later: each of three isomeric cyclic ketones ( α-irone, β-irone, and γ-irone) found in this oil and in other plants such as violets, and used in perfumery.The irones are methyl derivatives of ionones, differing from each other in the position of a double bond in or adjacent to a six-membered ring. They have the empirical formula C13H20O. ΘΚΠ the world > matter > chemistry > organic chemistry > ketones > [noun] > cyclic ketones pinacone1866 menthone1889 fenchone1891 pyrone1891 tropinone1896 humulone1916 lupulone1919 isoflavone1925 irone1948 tropone1951 1893 Bull. Pharmacy 7 552/1 Professor Tiemann..isolated the odorific principle of rhizoma Iridis and found it to be a ketone of the formula C13H20O, to which he gave the name Irone. 1922 J. J. Sudborough Bernthsen's Text-bk. Org. Chem. (new ed.) 627 Irone—a methyl ketone, C13H20O—is the odiferous principle of the iris root, and also probably of the violet. 1948 Ann. Rep. Progr. Chem. 44 148 While α- and γ-irone possess a fresh violet odour (the ‘irone’ odour), the β-isomer has an ionone smell. 1963 Chem. Abstr. 58 1500 Irones..can be synthesized from dextro-α-pinene. 1993 R. A. Hill in R. H. Thomson Chem. Nat. Products (ed. 2) iii. 133 The fragrance of the oil obtained from various Iris species is due to the irones such as α-irone. 2011 Independent (Nexis) 25 June (Mag.) 28 The iris roots..are dried for no less than three years in order for the irone, the molecule responsible for the scent in question, to develop. < as lemmas |
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