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单词 ethylate
释义

ethylaten.

Brit. /ˈɛθᵻleɪt/, U.S. /ˈɛθəˌleɪt/
Origin: Formed within English, by derivation. Etymons: ethyl n., -ate suffix1.
Etymology: < ethyl n. + -ate suffix1.
Chemistry.
= ethoxide n.
ΚΠ
1852 A. W. Williamson in Q. Jrnl. Chem. Soc. 4 231 The compound thus formed, which, from its analogy with the hydrate of potash, I will call ethylate of potash.
1880 Med. Temp. Jrnl. July 165 Report on the use of Ethylate of Sodium (Sodium Alcohol).
1904 Encycl. Americana I. at Alcohol The alkali metals attack absolute alcohol rapidly with the formation of compounds variously known as alcoholates, alcohates and alcoates, but more definitely and correctly as ‘ethylates’.
1954 T. Vickerstaff Physical Chem. Dyeing (ed. 2) vi. 171 Harris and Purves treated cellulosic fibres with thallous ethylate in ether.
2012 Carbon 50 3155/2 Very weakly acidic functions are determined by titration with an alcoholic sodium ethylate solution.
This entry has been updated (OED Third Edition, March 2014; most recently modified version published online March 2022).

ethylatev.

Brit. /ˈɛθᵻleɪt/, U.S. /ˈɛθəˌleɪt/
Origin: Formed within English, by derivation. Etymons: ethyl n., -ate suffix3.
Etymology: < ethyl n. + -ate suffix3. Compare slightly later methylate v.
Chemistry.
transitive. To introduce one or more ethyl groups into (a compound).
ΚΠ
1850 A. W. Hofmann in Philos. Trans. (Royal Soc.) 140 110 I have not attempted to ethylate this compound any farther.
1888 Pharmaceut. Jrnl. & Trans. 24 Nov. 409/1 The paranitrophenol, separated from the orthonitrophenol, is ethylated by means of an ethylic derivative.
1920 Jrnl. Soc. Chem. Industry 39 3/1 As to the method of ethylating amino compounds with ethyl chloride, it is..impossible to generalize.
1978 C. L. Thrall et al. in G. Stein et al. Methods Cell Biol. 19 xxii. 239 This treatment destroys diethylpyrocarbonate, which could otherwise ethylate the RNA.
2009 Jrnl. Chromatogr. B. 877 3212/1 The volume of alkylation reagent must be sufficient to ethylate all the amount of selenite in the sample.

Derivatives

ˈethylated adj.
ΚΠ
1850 A. W. Hofmann in Philos. Trans. (Royal Soc.) 140 110 In the other ethylated bases, the properties of the mother-compound are only slightly modified.
1958 R. W. Schwartz & J. W. Perry Surface Active Agents II. ii. 102 There is some evidence that the ethylated derivatives have higher surface activity than the unalkylated sulfonates.
2007 Ambio 36 447/2 The ionic CH3Hg(II) complexes are reacted with sodium tetraethylborate to form an ethylated derivative.
ˈethylating n.
ΚΠ
1883 Jrnl. Amer. Chem. Soc. 5 64 (heading) Methylating and ethylating of anilin and toluidin.
1946 J. V. Sherman & S. L. Sherman New Fibers xv. 294 Ethyl cellulose can be produced by reacting cellulose with an ethylating agent, ethyl chloride, in the presence of strong alkali.
1964 Mutation Res. 1 43 The conclusion drawn by some authors that ethylating is generally much more mutagenic than methylating does not apply to the chemicals used in these experiments.
2002 Carcinogenesis 23 2081/2 Cigarette smoke contains ethylating compounds, such as N -nitrosodiethylamine (NDEA) and hitherto uncharacterized ethylating agents.
This entry has been updated (OED Third Edition, March 2014; most recently modified version published online March 2022).
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n.1852v.1850
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