Purification and characterization of bovine parotid hypocalcemic factor obtained via extraction with glacial acetic acid.

In this paper, some chalcone derivatives (C1, C2) were synthesized based on the reaction of equal amount of substituted acetophenone and substituted banzaldehyde in basic medium. Oxazine and thiazine derivatives were prepared from the reaction of chalcones (C1-C2) with urea and thiourea respectively in a basic medium. Pyrazole derivatives were prepared based on the reaction of chalcones with hydrazine mono hydrate or phenyl hydrazine in the presence of glacial acetic acid as a catalyst. The new synthesized compounds were identified using various physical techniques like1 H-NMR and FT-IR spectra.

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Cyclodiene Chemistry. II. Identification of the Derivatives Employed in the Confirmation of Heptachlor, Heptachlor Epoxide, cis-Chlordane, and frans-Chlordane Residues

Journal of AOAC INTERNATIONAL ◽

10.1093/jaoac/52.5.1100 ◽

1969 ◽

Vol 52 (5) ◽

pp. 1100-1105

Author(s):

W P Cochrane

Keyword(s):

Acetic Acid ◽

Glacial Acetic Acid ◽

Allylic Alcohol ◽

Heptachlor Epoxide ◽

Addition Reactions ◽

Unsaturated Alcohol ◽

The Difference ◽

Vinyl Derivatives ◽

Alcohol Derivative

Abstract The effect of strong basic reagents on the title compounds was investigated. The dehydrochlorination of cis-chlordane proceeds rapidly to give 3-chlorochlordene, whereas its isomer, trans-chlordane, loses HCl very slowly to yield 2-chlorochlordene. The difference in rates of HCl elimination and the formation of isomeric chloro-vinyl derivatives is discussed with reference to the mechanisms of the reactions and the structures of the parent compounds. The action of basic reagents on heptachlor epoxide resulted in preferential epoxide isomerization (or rearrangement) to an allylic alcohol derivative. The structure of this α,β- unsaturated alcohol was elucidated from the characterization of the products formed by chlorination and oxidation. Ileptachlor undergoes substitution to give 1-hydroxychlordene in basic hydroxylic media. The addition reactions of tert.-butyl hypochlorite/glacial acetic acid to both heptachlor and aldrin are also mentioned.

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Synthesis and characterization of novel optically active poly(ester-imide-imine)s

e-Polymers ◽

10.1515/epoly.2009.9.1.122 ◽

2009 ◽

Vol 9 (1) ◽

Cited By ~ 2

Author(s):

Abdol Reza Hajipour ◽

Parniyan Roosta ◽

Saeed Zahmatkesh ◽

Arnold E. Ruoho

Keyword(s):

Amino Acids ◽

Acetic Acid ◽

Glacial Acetic Acid ◽

Optically Active ◽

Synthesis And Characterization ◽

Interfacial Polycondensation ◽

Thermal Stabilities ◽

Amino Phenol ◽

High Yields

Abstract N,N´-(3,3´,4,4´-Benzophenonetetracarboxylic)-3,3´,4,4´-diimido-di-Lamino acids (1a-1d) and N,N´-pyromelliticdiimido-di-L-amino acids (2a-2d) are prepared from the reaction of 3,3´,4,4´-benzenetetracarboxylic-3,3´,4,4´- dianhydride or pyromellitic dianhydride with the corresponding L-amino acids in a solution of glacial acetic acid/pyridine (3:2) at refluxing temperature. 4-(4-((4- Hydroxyphenylimino)methyl)benzylidene amino) phenol (3) is prepared from 4- amino phenol and terephthaldialdehyde in refluxing ethanol. Interfacial polycondensation method was used to prepare the corresponding polymers (PEII1-8) in two immiscible solvents (water/dichloromethane). The resulting poly(esterimide- imine)s (PEIIs) having good inherent viscosities (0.13-1.25 dl g-1), optical activity and thermal stabilities is obtained in high yields.

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Synergistic Extraction and Characterization of Fulvic Acid by Microwave and Hydrogen Peroxide–Glacial Acetic Acid to Oxidize Low-Rank Lignite

ACS Omega ◽

10.1021/acsomega.9b03796 ◽

2020 ◽

Vol 5 (12) ◽

pp. 6389-6394

Author(s):

Yingjie Zhang ◽

Guanqun Gong ◽

Honglei Zheng ◽

Xin Yuan ◽

Liangwei Xu

Keyword(s):

Hydrogen Peroxide ◽

Acetic Acid ◽

Fulvic Acid ◽

Glacial Acetic Acid ◽

Synergistic Extraction ◽

Low Rank

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Preparation and characterization of physicochemical properties of glacial acetic acid modified Gadung (Diocorea hispida Dennst) flours

Journal of Food Science and Technology ◽

10.1007/s13197-015-1723-5 ◽

2015 ◽

Vol 52 (10) ◽

pp. 6615-6622 ◽

Cited By ~ 1

Author(s):

Andri Cahyo Kumoro ◽

Rizka Amalia ◽

Catarina Sri Budiyati ◽

Diah Susetyo Retnowati ◽

Ratnawati Ratnawati

Keyword(s):

Acetic Acid ◽

Physicochemical Properties ◽

Glacial Acetic Acid

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SYNTHESIS AND CHARACTERIZATION OF D-XYLOFURANOSE-5-PHOSPHATE

Canadian Journal of Chemistry ◽

10.1139/v55-086 ◽

1955 ◽

Vol 33 (4) ◽

pp. 711-715 ◽

Cited By ~ 4

Author(s):

J. L. Barnwell ◽

W. A. Saunders ◽

R. W. Watson

Keyword(s):

Acetic Acid ◽

Glacial Acetic Acid ◽

Synthesis And Characterization ◽

Infrared Analysis ◽

Barium Salt ◽

Diphenyl Phosphate ◽

Mild Hydrolysis

Phosphorylation of 1,2-O-isopropylidene-D-xylose with diphenylphosphoro-chloridate yielded crystalline 1,2-O-isopropylidene-D-xylofuranose-5-diphenyl-phosphate. Subsequent hydrogenolysis in glacial acetic acid over Adams' catalyst quantitatively removed phenyl groups as shown by infrared analysis. Mild hydrolysis in acetic acid for two hours at 80 °C. removed the isopropylidene grouping, and D-xylose-5-phosphate was isolated as an amorphous barium salt. A yield of 81% of theoretical was obtained from 1,2-O-isopropylidene-D-xylose, or an over-all yield of 72% from xylose. The product was characterized through its amorphous barium, disodium, and dipotassium salts, and its crystalline dibrucine and distrychnine salts.

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