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单词 ethanoyl
释义

ethanoyln.

Brit. /ˌɛθəˈnəʊɪl/, /ˌɛθəˈnəʊʌɪl/, U.S. /ˌɛθəˈnoʊɪl/
Origin: Formed within English, by derivation; modelled on a German lexical item. Etymons: ethanoic adj., -oyl suffix.
Etymology: < ethan- (in ethanoic adj.) + -oyl suffix, after German Aethanoyl (1893 in the passage translated in quot. 1894 for ethanolic acid n. at ethanolic adj. 1, or earlier; also Äthanoyl and (now usually) Ethanoyl), itself probably after French éthanoyle (1892 or earlier).Compare the following early example of a compound formed with the French noun:1892 Nature 19 May 59/2 Bétaines: suffixe taïne. (Ex. Ethanoyltriméthyltaïne.)
Chemistry.
= acetyl n. 2.
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the world > matter > chemistry > organic chemistry > hydrocarbons > [noun] > hydrocarbon radicals > named, by number of carbon atoms > two
ethynyl1867
acetenyl1870
ethanoyl1894
1894 G. M'Gowan tr. A. Bernthsen Text-bk. Org. Chem. (ed. 2) vii. 191 Acetyl chloride (Ethanoyl chloride [Ger. Aethanoylchlorid]), CH3.COCl. Mobile colourless liquid of suffocating odour.
1903 W. A. Noyes Textbk. Org. Chem. xii. 171 Acetyl trimethylene (ethanoyl cyclopropane).
1975 R. O. C. Norman & D. J. Waddington Mod. Org. Chem. (ed. 2) xiv. 210 When the stopper is removed from a bottle of ethanoyl chloride, white fumes are seen.
1994 J. Barrett Chem. in your Environment iv. 80 Possibly the worst compound produced [in a photochemical smog] is that known as peroxoacetylnitrate, or ethanoyl nitrate.
2000 M. Clugston & R. Flemming Adv. Chem. xxiii. 431 Friedel–Crafts acylation attaches an acyl group (e.g. the ethanoyl group —COCH3) to a benzene ring.
This entry has been updated (OED Third Edition, March 2014; most recently modified version published online March 2022).
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n.1894
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更新时间:2025/2/11 2:02:43