单词 | methylate |
释义 | methylaten. Chemistry. = methoxide n.The term methylate is not now used in formal chemical nomenclature, but still is found occasionally in the literature. In particular, the name sodium methylate is used in the chemical industry for sodium methoxide (NaOCH3), a caustic solid. ΘΚΠ the world > matter > chemistry > organic chemistry > salts, esters or anions of organic acids > [noun] hydrochloride1823 isethionates1838 citraconate1840 adipate1841 anthranilate1841 stearate1841 itaconic acid1842 salicylate1842 oenanthate1845 ammelide1846 pelargonate1848 pelargyl1851 melanuric acid1852 methylate1852 opianyl1852 abietate1853 maleate1853 fulminuric1856 glyoxylate1856 urethane1856 indican1859 oxalyl1859 malonate1862 methacrylate1865 amylate1866 acetoacetate1873 isobutyrate1873 glutamate1876 hydrobromide1877 nicotinate1879 isovalerate1882 calcium gluconate1884 methoxide1885 isophthalate1886 homogentisate1891 naphthenate1899 peracetate1901 iodoacetate1902 glucuronate1904 hydnocarpate1905 thiomalate1905 azide1907 phytate1908 linolenate1909 isocitrate1925 phenylpyruvate1926 monosodium glutamate1929 perester1933 phosphonate1934 polymethacrylate1935 pantothenate1938 phosphoenolpyruvate1941 nylon salt1945 pantoate1945 penicilloate1946 thymidylate1959 chorismate1965 nonanoate1965 neuraminate1970 1835 Rep. Brit. Assoc., Sections 42 The sulpho-methylate of potash.] 1852 Jrnl. Chem. Soc. 4 232 Three-carbon ether, Ethylate of methyle, or Methylate of ethyle.——This compound may be prepared by the action of iodide of ethyle on the methylate of sodium. 1880 Athenæum 27 Nov. 713/1 The authors..have thus prepared aluminic methylate, ethylate, propylate (isopropylate could not be obtained). 1954 Jrnl. Amer. Chem. Soc. 76 1456/1 Deacetylation of I [sc. 9α-fluorohydrocortisone acetate] with sodium methylate afforded 9α-fluorohydrocortisone. 1955 Chem. & Engin. News 7 Mar. 1015/1 Jensen prefers ethylate, methylate, and phenolate to ethoxide, methoxide, and phenoxide... The first decennial index to CA [sc. Chemical Abstracts] used the -ylate and -olate terms, but changed to -oxide in Vols. 15 and 16.., perhaps to conform with British practice. 1991 Lancaster Catal. 1991/92 (MTM Res. Chemicals Ltd.) 1156 Sodium methoxide (Sodium methylate). 2000 Jrnl. Chromatogr. A. 873 129 The direct extraction of the methyl arsenic compounds by SPME [= solid-phase microextraction] after thioglycol methylate derivatization was studied. This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2022). methylatev. 1. transitive. Chemistry. To introduce one or more methyl groups into (a compound or group). ΘΚΠ society > occupation and work > industry > manufacturing processes > perform general or industrial manufacturing processes [verb (transitive)] > treat or impregnate with specific substance sig1581 camphor1607 water1625 lixiviate1646 camphorate1651 lantifya1652 camphorize1736 liquor1743 bituminate1799 methylate1851 salt1857 poach1873 resinate1891 vaseline1891 the world > matter > chemistry > organic chemistry > chemical processes or reactions > [verb (transitive)] > petroleum processes > miscellaneous other methylate1851 nitrosate1920 tosylate1963 nitrosylate1987 1851 A. W. Hofmann in Philos. Trans. (Royal Soc.) 141 376 As I had some grammes of diethylamylamine at my disposal, I preferred to methylate this compound. 1888 Jrnl. Chem. Soc. 53 778 An attempt was made to methylate acetyl-metanitranilide by the action of sodium ethylate and methyl iodide. 1917 Jrnl. Chem. Soc. 111 848 Experiments have proved the wide scope of the use of formaldehyde for methylating amino-compounds. 1967 I. L. Finar Org. Chem. (ed. 5) I. xxvi. 683 Veratrole..may be prepared by methylating catechol with methyl sulphate in alkaline solution. 1990 Carcinogenesis 11 1301/2 Methionine can be synthesized by the body from choline, a precursor of betaine that can methylate homocysteine to form ethionine. 2. transitive. To render (alcoholic spirits) unfit for drinking by the addition of methanol; to mix with methanol. See earlier methylated adj. Now rare. ΘΚΠ the world > matter > chemistry > chemical reactions or processes > subject to chemical reactions or processes [verb (transitive)] > subject to named chemical reaction or process > subject to miscellaneous other processes reduce?a1425 weaken1540 projecta1550 brown1570 spiritualize1593 colliquate1603 redisperse1621 imbibe1626 educe1651 to cant off1658 part1663 regalize1664 dint1669 roche1679 subtilizea1722 neutralize1744 develop1756 evolve1772 extricate1790 separate1805 unburn1815 leach1860 methylate1864 nitrate1872 nitre1880 sweeten1885 deflocculate1909 hybridize1959 the world > matter > chemistry > organic chemistry > chemical processes or reactions > [verb] > methylation methylate1864 1864 Ladies' Repository Apr. 247/2 In the last session of the British Parliament an act was passed allowing spirit of wine to be methylated duty free. 1880 Act 43 & 44 Vict. c. 24 §3 ‘Methylate’ means to mix spirits with some substance in such manner as to render the mixture unfit for use as a beverage. 1906 Science 16 Feb. 280/1 The commission for the methods of examining and methylating alcohol, appointed by the French government. Derivatives ˈmethylating n. and adj. ΚΠ 1915 Science 16 July 99/2 (heading) Dimethylsulfate as a methylating agent. 1929 Jrnl. Amer. Chem. Soc. 51 2535 We have found methyl bromide to be a satisfactory methylating agent with both malonic ester and acetoacetic ester. 1975 Clin. Chem. 21 751/1 We describe a modification of the MacGee method for rapid determination of phenytoin (diphenylhydantoin) in plasma by gas-liquid chromatography, in which an ethylating reagent is used instead of the more common methylating reagents. 1995 Nature 12 Oct. 481/1 The assumption has been that the analogous dication (CH3)3OH2+ is a methylating species. This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2022). < n.1852v.1851 |
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