| 释义 |
phenoxy(-), prefix and a. (n.) Chem. and Pharm.|fɪˈnɒksɪ|
[f. phen- + oxy-.]
(Before a vowel formerly also phenox-.) An inseparable formative element in names of compounds which contain the group {b1}O·C6H5, as in pheˌnoxyaˈcetic (or † phenoxacetic) acid, a colourless, crystalline solid, C6H5O·CH2COOH; also, any of the chlorinated derivatives of this, which are widely used as weedkillers; pheˌnoxymethylpeniˈcillin a white powder, 6-phenoxyacetamidopenicillanic acid, C16H18N2O5S, which is a semisynthetic penicillin.
1879Jrnl. Chem. Soc. XXXVI. 322 The author [sc. P. Fritzsche]..has undertaken the investigation of oxyphenylacetic acid,..which was discovered and described by Heintz.., and named by him phenoxacetic acid. Ibid. 642 (heading) Phenoxypropionic acid. 1880Ibid. XXXVII. 318 The preparation of phenoxyacetic acid is described at length. 1900E. F. Smith tr. V. von Richter's Org. Chem. (ed. 3) II. 146 Phenoxyacetone,..C6H5O.CH2.CO.CH3, boiling at 230°, is condensed by concentrated sulphuric acid to methyl cumarone. 1926D. W. MacArdle Use of Solvents in Synthetic Org. Chem. iv. 62 Marvel and Tanenbaum found that if in the preparation of phenoxybutyl alcohol, ethyl alcohol dried over lime was used as solvent, yields of not over 45% were obtained. 1946Long & Brenchley Suppression of Weeds (ed. 2) xiii. 62 As a result of the work carried out..at Jealott's Hill Research Station a range of phenoxyacetic acid products were discovered, of which Methoxone (4-chlor-2-methylphenoxyacetic acid) was finally chosen as being a most efficient weed killer with selective properties. 1948O. K. Behrens et al. in Jrnl. Biol. Chem. CLXXV. 798 Phenoxymethylpenicillin—N - (2 - Hydroxyethyl) - phenoxyacetamide (150 mg. per liter)..was used as the precursor for this penicillin. 1954W. J. Hickinbottom in E. H. Rodd Chem. Carbon Compounds IIIa. viii. 426 By the action of alcoholic potash, phenoxyacetylene is formed, an unstable oil. 1959Jrnl. Exper. Bot. X. 33 (heading) Factors controlling the uptake of phenoxyacetic acids by Lemna minor. 1959Times 6 Mar. 13/6 A preparation of penicillin—penicillin V, or phenoxymethylpenicillin—was produced which was not destroyed by the acid contents of the stomach. 1969New Scientist 9 Jan. 61/2 Even the relatively innocuous phenoxyacetic acid compounds..have already caused significant ecological damage by destroying natural mangrove associations. 1970Hoover & Stedman in A. Burger Medicinal Chem. (ed. 3) I. xviii. 382/1 Phenoxymethylpenicillin (penicillin V) is now the only important biosynthetic penicillin in use.
B. In Combs. in which phenoxy may be used attrib. (without hyphen) or joined by a hyphen to the second element.
1. Containing or being the group{b1}O·C6H5.
1896Jrnl. Chem. Soc. LXIX. 161 (heading) On γ-phenoxy-derivatives of malonic acid and acetic acid. 1923Chem. Abstr. XVII. 3864 (heading) Phenoxy derivatives of propane. 1926Jrnl. Amer. Chem. Soc. XLVIII. 2748 The method chosen for the synthesis of these compounds was first to prepare the phenoxy alcohols and then to convert them into the chlorides. 1926Biochem. Jrnl. XX. 1083 Replacement of the two phenoxy-groups by bromine. 1928Chem. Abstr. XXII. 769 (heading) Influence of the phenoxy group and its derivatives upon the halochromism of known chromogens. 1964L. J. Audus Physiol. & Biochem. Herbicides v. 195 The effects of the halogenated aliphatic acids on total soil populations are as diverse as those of the phenoxy herbicides. 1964W. A. Waters Mechanisms Oxidation Org. Compounds ix. 139 In aqueous solution the phenoxy radical itself has a mean lifetime of about 10-3 second. 1974McGraw-Hill Yearbk. Sci. & Technol. 330/2 The phenoxy herbicides (2,4-D and 2,4-T), aminotriazole.., and pidoram are frequently used in forestry.
2. Designating thermoplastics characterized by a linear molecule containing recurring phenoxy groups, which are usu. made by condensation of epoxides, esp. epichlorhydrin, with certain phenols. Also as n.
1962Mod. Plastics Nov. 169 (heading) Phenoxy—a new thermoplastic. Ibid., Phenoxy materials are a new family of thermoplastic resins that can be chemically cross-linked to impart thermosetting properties. 1963Aeroplane 21 Feb. 29/2 Ventilating ducts in the Boeing 727 are fabricated from self-extinguishing phenoxy resin. 1967Times Rev. Industry May 76/2 There has also been progress in the currently lower tonnage plastics such as nylon and polyester in film laminates for packaging processed foods, phenoxy polymer in blown bottles, and polycarbonate for sterilizable containers. 1969L. S. Mounts in W. R. R. Park Plastics Film Technol. v. 141 Phenoxy films are rigid transparent films with high impact strength. 1970W. G. Potter Epoxide Resins ii. 19 The ‘phenoxies’ are in fact to be regarded as high-M thermoplastic materials and have been used either as surface-coating binder resins.., or as thermoplastics for blow moulding, injection moulding, [etc.]. |