pinene Chem.
(ˈpaɪniːn)
[ad. G. pinen (O. Wallach 1885, in Ann. d. Chem. u. Pharm. CCXXVII. 300), f. L. pīn-us pine n.2 + G. -en -ene.]
Either or both of two isomeric liquid terpenes, C10H16, which are the major constituents of turpentine and differ in the position of the double bond.
| 1885 Jrnl. Chem. Soc. XLVIII. 551 The author proposes to classify the terpenes as follows:..B. True Terpenes, C10H16, divided into the following groups: 1. Pinenes (boiling point 160°). [Etc.]. 1886 Ibid. L. 71 Terpine is formed by the inversion of pinenen with alcoholic sulphuric acid. 1922 Nature 16 Feb. 226/2 The yield of oil from leaves of the New South Wales sassafras tree was about 1 per cent... The principal constituents identified are safrol, camphor, pinene, sesquiterpenes, eugenol, and alcoholic bodies. 1960 A. R. Pinder Chem. of Terpenes v. 93, α-Pinene is of great importance commercially in the synthesis of camphor and related terpenes... β-Pinene, which is isomeric with α-pinene, accompanies the latter in most sources of the hydrocarbon. 1971 Daily Tel. 12 June 6/3 The leaf is pinched to break specialised cells containing these elements of geraniol, citral, eucalyptal, borneol, pinene and others. |