alkylenen.
/ˈalkᵻliːn/, U.S. /ˈælkəˌlin/ Chemistry.
An alkene or olefin; a divalent radical or group derived from an alkene by the loss of two hydrogen atoms. Chiefly attributive or as a formative element in names of compounds.
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olefin1860
alkylene1886
alkene1899
1886 E. F. Smith tr. V. von Richter Chem. Carbon Compounds 31 Those groups that are bivalent are called alkylens etc.
1889 G. M'Gowan tr. A. Bernthsen Text-bk. Org. Chem. 46 Olefines or Hydrocarbons of the Ethylene Series (Alkylenes): CnH2n.
1920 Jrnl. Amer. Chem. Soc. 42 803 The characteristic property of tertiary carbinols to dissociate easily..into alkylenes and water.
1937 Lancet 11 Dec. 1360/2 To determine..how far the trypanocidal activity of synthalin is a specific property of the alkylene diguanidine type of molecule.
1951 I. L. Finar Org. Chem. I. xiii. 260 Diamines may be prepared by methods similar to those for the monoamines, using alkylene halides instead of alkyl halides.
1993 Stud. Conservation 38 37/1 Reactive bulking treatments, such as thermosetting resins and the alkylene oxides,..can improve the stiffness of fragile cell walls.
This entry has been updated (OED Third Edition, September 2009; most recently modified version published online December 2021).
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