单词 | tetramethylene |
释义 | > as lemmastetramethylene tetramethylene n. Brit. /ˌtɛtrəˈmɛθᵻliːn/ , U.S. /ˌtɛtrəˈmɛθəˌlin/ the gaseous alicyclic compound (CH2)4; also, (a compound containing) the bivalent straight-chain radical —CH2(CH2)2CH2—.ΘΚΠ the world > matter > chemistry > organic chemistry > hydrocarbons > [noun] > cyclic hydrocarbons > others heveëne1838 menthene1838 carotene1861 stilbene1868 mesityl1879 naphthene1884 tetramethylene1885 hexamethylene1887 pentamethylene1887 irene1894 pregnane1932 adamantane1933 aldrin1949 sterane1951 norbornane1952 1885 W. H. Perkin in Jrnl. Chem. Soc. 47 806 It was thought that the simplest method would be to regard the saturated hydrocarbons themselves as multiples of methylene, CH2, and thus name them di-, tri-, tetra-, penta-, &c., methylene, as is easiest seen from the following table:—..Tetra-methylene. 1898 J. Wade Introd. Study Org. Chem. xxxv. 219 The tetramethylene compound..is formed by the reduction of ethylene cyanide with sodium amalgam in alcoholic solution. 1909 C. A. Keane Mod. Org. Chem. v. 63 The simplest cyclic compounds containing four and five carbon atoms are the hydrocarbons tetramethylene, C4C8, and pentamethylene, C5H10. 1944 S. J. Smith Princ. Org. Chem. x. 197 Both their methods of preparation and their parachors..show them to be cyclic compounds containing no unsaturated linkage:..Cyclobutane tetramethylene. 1966 Nomencl. Org. Chem.: A & B (I.U.P.A.C.) (ed. 2) 16 The names of bivalent radicals derived from normal alkanes by removal of a hydrogen atom from each of the two terminal carbon atoms of the chain are ethylene, trimethylene, tetramethylene, etc. 1971 N. L. Allinger et al. Org. Chem. iv. 63 Frequently occurring hydrocarbon groupings that have more than one site for the attachment of substituents are also given common or trivial names..ICH2CH2CH2CH2I 1,4-Diiodobutane (Tetra~methylene iodide). < as lemmas |
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