tetrahydrofuran


Also found in: Thesaurus, Medical, Acronyms, Encyclopedia, Wikipedia.

tet·ra·hy·dro·fur·an

 (tĕt′rə-hī′drə-fyo͝or′ăn′, -fyo͝o-răn′)
n.
A clear, colorless, highly flammable liquid cyclic ether, C4H8O, used as a solvent for natural and synthetic resins and in polymerization.

tetrahydrofuran

(ˌtɛtrəˌhaɪdrəˈfjʊəræn)
n
(Chemistry) a colourless liquid used as a solvent
References in periodicals archive ?
PCL was dissolved in a 3:1 solution of tetrahydrofuran (THF) to methanol (MeOH), both obtained from Caledon Labs, with respective purities of 99% and 99.
2]O) (Stem-Supply), ammonia solution (NH4OH) (Sigma-Aldrich), tetrahydrofuran (THF) (SigmaAldrich) and absolute (anhydrous) ethanol (SigmaAldrich).
Then, a solution of alkoxysilane functionalized polymer in tetrahydrofuran was treated with excess 1 M tetrabutylammonium fluoride.
The third part deals with eight groups of flavouring agents such as pyridine, pyrrole and qunoline derivatives; aliphatic and alicyclic hydrocarbons; aliphatic, linear, unsaturated aldehydes, acids and related alcohols, acetals and related esters; monocyclic and bicyclic secondary alcohols, ketones and related esters; amino acid and related substances; tetrahydrofuran and furanone derivateives and Phenyl substituted aliphatic alcohols and related aldehydes and esters.
II], including sodium sulfite, sodium hydrogen sulfite, inorganic salts comprising a metal ion, hydrazine hydrate, mercaptoethanol, tetrahydrofuran, dihydroanthracene, 2,3-dimethylbutadiene, silane compounds, borane compounds, aldehydes, and derivatives of such compounds.
Industrial polyether polyols are generally limited in monomer composition to propylene oxide, ethylene oxide, butylene oxide, and tetrahydrofuran, while industrial polyester polyols, many of which are the condensation products of organic acids and alcohols, may be prepared by a great many more combinations of monomers, and therefore add to the potential versatility of polyure thane products.
Products: 1,4 Butanediol, Tetrahydrofuran, PolyTHF polytetramethylene-ethergly-col, Gamma-Butyrolactone, N-Methylpyrrolidone, and NEOL Neopentylglycol
6] at 70[degrees]C (Gaw and Swinton, 1968) with the Redlich-Kister equation, and for the system 1,1,1,2,3,4,4,5,5,5-decafluoropentane + tetrahydrofuran at 26.
Experimental gas-phase complexation enthalpies were found in the literature for dimethyl ether [14], diethyl ether [14], ethyl acetate [15], trimethylamine [16], trimethylphosphine [17], tetrahydropyran [18], tetrahydrofuran [18], and tetrahydrotiophene [19].
C(alpha), N-Dilithiophenylhydrazones were prepared in excess lithium diisopropylamide, {LDA), and condensed with ethyl oxanilates or ethyl oxamate to give C-acylated intermediates that could be isolated or cyclized directly with aqueous hydrochloric acid/ tetrahydrofuran (THF) to the targeted 1H-pyrazole-5-carbox-amides.
Methanol, n-butanol, ethyl acetate, acetone, and acetonitrile were gradient grade; absolute ethanol, tetrahydrofuran, n-hexane, butylated hydroxytoluene (BHT), and disodium sulfate were analytical grade and were obtained from Merck.
Among these new PAQs, the polymer prepared from phenyl-p-benzoquinone and 2-butyl-2-ethyl-1,5-pentanediamine had demonstrated good solubility in common organic solvents such as acetone, methylene chloride, methanol, tetrahydrofuran, methyl isobutyl ketone, dimethylsulfoxide, and dimethylformamide.