| 单词 |
butine |
| 释义 |
butine Chem.|ˈbjuːtaɪn, -iːn|
[ad. G. butin, f. L. būt-yrum butter n.1 + -ine5.]
†1. The name given by W. Heintz (Ann. der Physik und Chem. (1853) XC. 151) to a substance present in butter. Obs.
1867Bloxam Chem. 582 Butter..contains also butine, which yields glycerine and butic acid (HO.C40H39O3) when saponified.
2. Orig., any of the four unsaturated unbranched hydrocarbons with the formula C4H6; later restricted to the two isomers that have a triple bond, those with two double bonds being called butadiene.
The word is now obsolescent, being replaced by butyne.
1884Roscoe & Schorlemmer Treat. Chem. III. ii. 463 Butine, C{b2}H2CH.CH{b2}CH2. When erythrite, C4H6(OH)4, is heated with concentrated formic acid to 230°, butine is formed. 1888Amer. Chem. Jrnl. X. 431 The fourth butine, methylisoallylene, was the subject of this investigation. 1889G. M'Gowan tr. Bernthsen's Text-bk. Org. Chem. 57 Crotonylene or Butine, CH2{b2}CH{b1}CH{b2} CH2, is contained in illuminating gas. Ibid., Pyrrolylene, C4H6, from pyrrolidine, is probably identical with the butine from erythrite. 1895Thomson & Bloxam Bloxam's Chem. (ed. 8) 524 The hydrocarbon C4H6 (butine) can exist in two forms, each of which will have a pair of trebly-linked carbon atoms. 1934Chem. Abstr. XXVIII. 2321 EtI and NaC{vddd}CH in liquid NH3 at -45° give 78% of 1-butine. |
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