| 单词 | acid anhydride |
| 释义 | > as lemmasacid anhydride acid anhydride n. Chemistry (a) an oxide which combines with water to form an acid; (b) any of a class of organic compounds whose molecule contains two acyl groups linked by an oxygen atom (formally derived by the combination of two carboxylic acid groups with the loss of a molecule of water); cf. anhydride n. ΚΠ 1857 Chem. Gaz. 1 Aug. 289 Cyanate of potash was submitted to dry distillation with benzoic acid anhydride.] 1866 H. Watts Dict. Chem. IV. 419 They [sc. phenylamides or anilides] are formed by dry distillation of the aniline-salts, or by the action of acid anhydrides, or chlorides of acid-radicles, on aniline. 1909 E. I. Lewis Elements Org. Chem. viii. 60 It is called Acetic anhydride, the simplest of the Acid Anhydrides. 1922 T. M. Lowry Inorg. Chem. xxi. 235 Chromium trioxide, CrO3, and dimanganese heptoxide, Mn2O7, are acid anhydrides from which important series of salts are derived. 1955 B. C. L. Kemp Elem. Org. Chem. (new ed.) x. 144 It is to be noted that in contrast to the acid chlorides, the acid anhydrides do not fume in air. 2001 J. Clayden et al. Org. Chem. xxvii. 704 (heading) Enols and enolates from acid anhydrides. < as lemmas |
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