aryl


Also found in: Dictionary, Medical, Wikipedia.

aryl

[′ar·əl]
(organic chemistry)
An organic group derived from an aromatic hydrocarbon by removal of one hydrogen.
References in periodicals archive ?
To obtain semicrystalline poly(aryl ether ketone)s with high [T.sub.g]S and moderate [T.sub.m]s is our goal since they would have good melt processabilities, excellent thermal and mechanical properties, and solvent-resistance characteristics.
General Procedure for Suzuki Coupling Reaction of Aryl Halides Using XL-QPPd as Catalyst.
Brown crystals, Yield (1.97 g, 94%), m.p 218-220[degrees]C, IR (KBr, [v.sub.max] in [cm.sup.-1]): 3405 (-NH), 3101 (=C-H), 1894 (C=N), 1633 (C=C), [sup.1]H NMR (DMSO-[d.sub.6], 400 MHz) [delta] ppm: 6.91-6.95 (d, 1H, -C=CH (vinylic proton), [J.sub.H-H] = 16.4 Hz), 7.16-7.18 (t, 1H, furan proton), 7.23-7.28 (q, 2H, phenylic protons), 7.44-7.45 (d, 1H, furan proton), 7.57-7.61 (q, 2H, phenylic protons), 7.67-7.68 (d, 1H, furan proton), 7.92-7.96 (d, 1H, -CH=C-(vinylic proton), [J.sub.H-H] = 16.4 Hz), 10.0 (s, 1H, -NH of benzimidazole), [sup.13]C NMR (DMSO-[d.sub.6], 100 MHz) [delta] ppm: 114.47, 114.50, 122.87, 127.96, 128.51, 129.15, 129.48, 137.39, 140.33, 149.87 (6 aryl carbons, 4 furyl carbons, 2 vinylic carbons and 1 imidazole quaternary carbon), MS (m/z): 211.10 ([M.sup.+*]), Anal.
Compounds 2 and 3 can also be formed by nucleophilic solvent trapping of an aryl cation deriving from homolysis, followed by in-cage electron transfer [18].
A direct polarisation [sup.13]C NMR analysis (DP) was completed on a subset of 38 fractions selected to be indicative of the range of aryl C contents obtained from the CP analyses.
Citation: "The aryl hydrocarbon receptor directs hematopoietic progenitor cell expansion and differentiation"; B.
Oxidative addition (reaction of aryl halide with a zerovalent palladium catalyst) is often described as a rate-limiting step, and numerous papers are dedicated to the experimental and theoretical investigations of its kinetics and mechanism [12-15].
So this product becomes a reactant, and you end up attaching a second and third aryl ring onto the nitrogen, which isn't what you set out to do.
[sup.1]H-NMR (400 MHz, CD[Cl.sub.3]) [delta] 1.43 (s, 9H); 2.30(s, 3H, C[H.sub.3]); 2.33-2.42 (m, 2H, H 3); 3.55-3.58 (m, 1H, H-1); 3.89-3.93 (m, 3H, H-1, H-2), 4.48 (bs, NHBoc); 7.21-7.37 (m, 17 H, aryl); 7.72 (d, J = 8.0 Hz, 2H, aryl).
Perdew, "The aryl hydrocarbon receptor complex and the control of gene expression," Critical Reviews in Eukaryotic Gene Expression, vol.18, no.3, pp.207-250, 2008.
(ii) 2-Aryl/aryloxy-thiourea-5-aryl-1,3,4-thiadiazoles: Aryl or aryloxy thiourea (0.01M) was added to a solution of 5-aryl-2-mercapto-1,3,4-thiadiazole (0.01 M) in methanol and refluxed for 5 h.
R2 is H or an alkyl, alkenyl, cycloalkyl, or aryl group, optionally having 1-3 substituents independently selected from the group consisting of C1-C6alkyl, OH, O--C1-C6alkyl, halogen and CF3.