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Furan is a heterocyclic organic compound, consisting of a five-membered aromatic ring with four carbon atoms and one oxygen atom. Chemical compounds containing such rings are also referred to as furans. Furan is a colorless, flammable, highly volatile liquid with a boiling point close to room temperature.
2,3-Dihydrofurans are intermediates in the Feist–Benary synthesis of furans from α-halogen ketones and β-dicarbonyl compounds. [4] The 2,3-dihydrofuran ring can be synthesized by several methods. These routes usually involve cyclization or cycloaddition reactions of carbonyl compounds using metal-containing catalysts.
In 1901, the German chemist Carl Harries determined furan's structure through work with succindialdehyde and 2-methylfuran, thereby also confirming furfural's proposed structure. [ 16 ] [ 17 ] Furfural remained relatively obscure until 1922, [ 6 ] when the Quaker Oats Company began mass-producing it from oat hulls. [ 18 ]
Chemical structure of annonacin, an acetogenin. Eribulin (brand name: Halaven), a commercial THF-containing anticancer drug. The tetrahydrofuran ring is found in diverse natural products including lignans, acetogenins, and polyketide natural products. [26] Diverse methodology has been developed for the synthesis of substituted THFs. [27]
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Lewis structure of a water molecule. Lewis structures – also called Lewis dot formulas, Lewis dot structures, electron dot structures, or Lewis electron dot structures (LEDs) – are diagrams that show the bonding between atoms of a molecule, as well as the lone pairs of electrons that may exist in the molecule.
2-Furoic acid is an organic compound, consisting of a furan ring and a carboxylic acid side-group. Along with other furans, its name is derived from the Latin word furfur, meaning bran, from which these compounds were first produced. [2]
2-Furonitrile is a colorless derivative of furan possessing a nitrile group. Synthesis