单词 | azulene |
释义 | azulenen. Chemistry. A liquid hydrocarbon, blue in colour, found in some volatile oils; = cerulein n.The term is used to cover not only the parent hydrocarbon but the class of derivatives with the same basic structure, viz. a five-ring joined to a seven-ring, isomeric with naphthalene, which has two six-rings joined together. ΘΚΠ the world > matter > chemistry > organic chemistry > hydrocarbons > [noun] > polynuclear aromatic hydrocarbons green oil1607 paranaphthalene1838 anthracene1840 oxanthracene1862 chrysene1864 cerulein1866 acenaphthene1868 naphthoquinone1870 anthracene oil1873 azulene1874 acenaphthylene1875 ionene1894 1874 Jrnl. Chem. Soc. 27 1 Pure oil of wormwood (obtained from Dr. Septimus Piesse) being submitted to distillation, the greater part passed over..close upon 200°, a portion of blue oily product being obtained at a higher temperature (the azulene of Piesse and cœruleïn of Gladstone). 1880 New Sydenham Soc. Lexicon Cærulein, same as Azulene. 1956 Nature 21 Jan. 145/2 In the fractionation of hydrocarbons found in Copaiba balsam, we have isolated..a compound with the typical reactions of azulenes, and which we propose to call ‘cario~azulene’. This entry has not yet been fully updated (first published 1972; most recently modified version published online June 2018). < n.1874 |
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