| 单词 | benzenoid |
| 例句 | It will be understood in future that a phenol is a hydroxy-derivative of a benzenoid hydrocarbon. Coal and What We Get from It He suggests that the term “quinone” theory be abandoned, and replaced by the Umlagerungs theory, since this term implies some intermolecular rearrangement, and does not connote simply benzenoid compounds as does “quinonoid.” Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" One-third of which is of benzenoid type The lignone contains but little hydroxyl. Researches on Cellulose 1895-1900 The molecule is aromatic but not benzenoid; however, by the reduction of one half of the molecule, the other assumes a benzenoid character. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" Syntheses of the Benzene Ring.—The characteristic distinctions 54 which exist between aliphatic and benzenoid compounds make the transformations of one class into the other especially interesting. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" These oxygen derivatives of benzenoid hydrocarbons form a special group of compounds known as quinones. Coal and What We Get from It Bamberger’s observations on reduced quinoline derivatives point to the same conclusion, that condensed nuclei are not benzenoid, but possess an individual character, which breaks down, however, when the molecule is reduced. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" We are still without any evidence as to the possible transition of the hexoses to benzenoid compounds. Researches on Cellulose 1895-1900 The transformation is not one of the oxidation of a hexamethylene compound to a benzenoid compound, for only two hydrogen atoms are removed. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" The stronger argument against the ethylenoid linkages demanded by Kekul�’s formula is provided by the remarkable stability towards oxidizing and reducing agents which characterizes all benzenoid compounds. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" In other words, we might have had to wait till 1965 to reach our present state of knowledge concerning the theory of benzenoid compounds if the coal-tar industry had not been in existence. Coal and What We Get from It |
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