Extraction of Glyoxylic Acid, Glycolic Acid, Acrylic Acid, and Benzoic Acid with Trialkylphosphine Oxide

2003 ◽  
Vol 48 (3) ◽  
pp. 621-624 ◽  
Author(s):  
Yi Li ◽  
Yundong Wang ◽  
Yuxin Li ◽  
Youyuan Dai
1863 ◽  
Vol 12 ◽  
pp. 429-430

Glyoxylic acid contains one atom of oxygen less than oxalic acid, and may be considered as glycolic acid minus two atoms of hydrogen. It therefore bears to these two acids the same relation that oil of bitter almonds does to benzoic acid and benzylic alcohol. On another occasion it has been shown to possess other properties in common with hydride of benzoyl.


1961 ◽  
Vol 236 (5) ◽  
pp. 1280-1284
Author(s):  
K.E. Richardson ◽  
N.E. Tolbert

ACS Catalysis ◽  
2015 ◽  
Vol 5 (11) ◽  
pp. 6946-6955 ◽  
Author(s):  
Eyas Mahmoud ◽  
Jingye Yu ◽  
Raymond J. Gorte ◽  
Raul F. Lobo

1859 ◽  
Vol 9 ◽  
pp. 711-716

If glycol be oxidized with nitric acid, according to Wurtz, it is converted into glycolic and oxalic acids. Glycol. C 2 H 6 O 2 + O 2 = C 2 H 4 O 3 + Glycolic acid H 2 O Water. Glycol. C 2 H 6 O 2 + O 4 = C 2 H 2 O 4 + Glycolic acid 2H 2 O Water.


1977 ◽  
Vol 55 (1) ◽  
pp. 145-152 ◽  
Author(s):  
Peter Yates ◽  
R. J. Mayfield

The reaction of α-diazoacetophenone (1) with methanolic sodium methoxide in dilute solution gives 3-benzoyl-5-hydroxy-4-phenylpyrazole (4), 3-benzoyl-4-hydroxy-5-phenyl-pyrazole (5), 3-benzoyl-5-methoxy-4-phenylpyrazole (9), 3-benzoyl-4-phenylpyrazole (6), 5-benzoyltetrazole (7), 3,6-dibenzoyldihydro-s-tetrazine (10), cis- and trans- β-benzoyl- α-phenyl-acrylic acid, acetophenone, methyl benzoate, and benzoic acid. The pyrazoles 4, 5, and 9 are considered to arise via reaction of 1 to give α-methoxyacetophenone followed by further reaction of the anion of the latter with 1. Evidence in accord with this view was obtained by a study of the products formed when 1 was treated with methanolic sodium methoxide in the presence of 2-methoxy-4′-methylacetophenone. Acetophenone is considered to arise by reduction of 1 via phenylglyoxal 2-monohydrazone (37); condensation of 1 with the enolate ion derived from acetophenone then can give the pyrazole 6, while condensation of 1 with 37 could give the tetrazole 7.


2005 ◽  
Vol 71 (3) ◽  
pp. 1254-1258 ◽  
Author(s):  
Kunichika Nakamiya ◽  
Syunji Hashimoto ◽  
Hiroyasu Ito ◽  
John S. Edmonds ◽  
Masatoshi Morita

ABSTRACT By using 1,4-dioxane as the sole source of carbon, a 1,4-dioxane-degrading microorganism was isolated from soil. The fungus, termed strain A, was able to utilize 1,4-dioxane and many kinds of cyclic ethers as the sole source of carbon and was identified as Cordyceps sinensis from its 18S rRNA gene sequence. Ethylene glycol was identified as a degradation product of 1,4-dioxane by the use of deuterated 1,4-dioxane-d 8 and gas chromatography-mass spectrometry analysis. A degradation pathway involving ethylene glycol, glycolic acid, and oxalic acid was proposed, followed by incorporation of the glycolic acid and/or oxalic acid via glyoxylic acid into the tricarboxylic acid cycle.


2016 ◽  
Vol 16 (8) ◽  
pp. 5263-5282 ◽  
Author(s):  
Dhananjay K. Deshmukh ◽  
Kimitaka Kawamura ◽  
Manuel Lazaar ◽  
Bhagawati Kunwar ◽  
Suresh K. R. Boreddy

Abstract. Size-segregated aerosols (nine stages from < 0.43 to > 11.3 µm in diameter) were collected at Cape Hedo, Okinawa, in spring 2008 and analyzed for water-soluble diacids (C2–C12), ω-oxoacids (ωC2–ωC9), pyruvic acid, benzoic acid, and α-dicarbonyls (C2–C3) as well as water-soluble organic carbon (WSOC), organic carbon (OC), and major ions (Na+, NH4+, K+, Mg2+, Ca2+, Cl−, NO3−, SO42−, and MSA−). In all the size-segregated aerosols, oxalic acid (C2) was found to be the most abundant species, followed by malonic and succinic acids, whereas glyoxylic acid (ωC2) was the dominant oxoacid and glyoxal (Gly) was more abundant than methylglyoxal. Diacids (C2–C5), ωC2, and Gly as well as WSOC and OC peaked at fine mode (0.65–1.1 µm) whereas azelaic (C9) and 9-oxononanoic (ωC9) acids peaked at coarse mode (3.3–4.7 µm). Sulfate and ammonium were enriched in fine mode, whereas sodium and chloride were in coarse mode. Strong correlations of C2–C5 diacids, ωC2 and Gly with sulfate were observed in fine mode (r =  0.86–0.99), indicating a commonality in their secondary formation. Their significant correlations with liquid water content in fine mode (r =  0.82–0.95) further suggest an importance of the aqueous-phase production in Okinawa aerosols. They may also have been directly emitted from biomass burning in fine mode as supported by strong correlations with potassium (r =  0.85–0.96), which is a tracer of biomass burning. Bimodal size distributions of longer-chain diacid (C9) and oxoacid (ωC9) with a major peak in the coarse mode suggest that they were emitted from the sea surface microlayers and/or produced by heterogeneous oxidation of biogenic unsaturated fatty acids on sea salt particles.


2020 ◽  
Vol 22 (12) ◽  
pp. 4692-4696
Author(s):  
Jian-Jun Li ◽  
Cheng-Gang Wang ◽  
Jin-Feng Yu ◽  
Peng Wang ◽  
Jin-Quan Yu

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