furan


furan
/fyoor"an, fyoo ran"/, n.
a colorless, liquid, unsaturated, five-membered heterocyclic compound, C4H4O, obtained from furfural: used chiefly in organic synthesis. Also called furfuran.
[1890-95; aph. form of FURFURAN]

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      any of a class of organic compounds of the heterocyclic aromatic series characterized by a ring structure composed of one oxygen atom and four carbon atoms. The simplest member of the furan family is furan itself, a colourless, volatile, and somewhat toxic liquid that boils at 31.36° C (88.45° F). It is usually converted by hydrogenation to tetrahydrofuran, which is used as a solvent and for production of adipic acid and hexamethylenediamine, the raw materials for nylon-6,6. Several other members of the furan family are produced on a large scale for use as solvents and chemical raw materials. The first furan compound discovered was pyromucic acid (2-furoic acid), prepared in 1780. The aldehyde furfural, used as a solvent in petroleum refining, is manufactured from corn cobs and oat hulls by treatment with acid.

      Many sugars exist in molecular forms called furanoses, possessing the tetrahydrofuran ring system. Important examples are provided by ribose and deoxyribose—which are present in the furanose form in nucleic acids, the heredity-controlling components of all living cells—and fructose.

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Universalium. 2010.

Look at other dictionaries:

  • furan — FURÁN s.m. Combinaţie chimică organică lichidă, obţinută la distilarea răşinilor de conifere şi folosită ca important intermediar în sintezele de mase plastice şi de medicamente. – Din fr. furanne. Trimis de LauraGellner, 15.05.2004. Sursa: DEX… …   Dicționar Român

  • Furān — Furān, s. Furfuran …   Meyers Großes Konversations-Lexikon

  • fùrān — m 〈G furána〉 kem. bezbojna tekućina aromatskih spojeva; furfuran …   Veliki rječnik hrvatskoga jezika

  • furan — fùrān m <G furána> DEFINICIJA kem. bezbojna tekućina aromatskih spojeva; furfuran ETIMOLOGIJA nlat. furanum …   Hrvatski jezični portal

  • furan — [fyo͞o′ran΄, fyo͞o ran′; fyoor′an΄] n. [contr. < FURFURAN] a colorless, liquid heterocyclic compound, C4H4O, prepared from wood tar or furfural, and used in organic synthesis …   English World dictionary

  • Furan — 45°31′29″N 4°14′59″E / 45.52472, 4.24972 …   Wikipédia en Français

  • Furan — This article is about the chemical industrial compound. For the unintentional contaminant byproduct, see Polychlorinated dibenzofurans. For other uses, see Furan (disambiguation). Furan …   Wikipedia

  • Furan — Strukturformel Allgemeines Name Furan Andere Namen Furfuran Divinylenox …   Deutsch Wikipedia

  • Furan — Fu|ran 〈n. 11; unz.; Chem.〉 organ. chem. Verbindung mit heterozyklisch gebundenem Sauerstoffatom u. chloroformartigem Geruch, durch Oxidation des Furfurols gewonnen, lässt sich zu Tetrahydrofuran, einem wichtigen Lösungsmittel, hydrieren [zu lat …   Universal-Lexikon

  • furan — also furane noun Etymology: International Scientific Vocabulary, from furfural Date: 1894 a cyclic flammable liquid compound C4H4O that is obtained from wood oils of pines or made synthetically and is used especially in organic synthesis; also… …   New Collegiate Dictionary


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