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

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.

scholarly journals Synthesis and Characterization of Some Novel Oxazine, Thiazine and Pyrazol Derivatives

2016 ◽  
Vol 13 (2) ◽  
pp. 244-252
Author(s):  
Baghdad Science Journal
Keyword(s):  
Acetic Acid ◽  
Ir Spectra ◽  
Glacial Acetic Acid ◽  
Basic Medium ◽  
Synthesis And Characterization ◽  
Pyrazole Derivatives ◽  
Phenyl Hydrazine ◽  
H Nmr ◽  
Ft Ir

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.

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

e-Polymers ◽  
2009 ◽  
Vol 9 (1) ◽  
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.

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

ACS Omega ◽  
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

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

2015 ◽  
Vol 52 (10) ◽  
pp. 6615-6622 ◽  
Author(s):  
Andri Cahyo Kumoro ◽  
Rizka Amalia ◽  
Catarina Sri Budiyati ◽  
Diah Susetyo Retnowati ◽  
Ratnawati Ratnawati
Keyword(s):  
Acetic Acid ◽  
Physicochemical Properties ◽  
Glacial Acetic Acid

SYNTHESIS AND CHARACTERIZATION OF D-XYLOFURANOSE-5-PHOSPHATE

1955 ◽  
Vol 33 (4) ◽  
pp. 711-715 ◽  
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.

Characterization of the Analytical Response of ISFET Sensors for Quantitative and Thermodynamic Assessment in Glacial Acetic Acid

2003 ◽  
Vol 15 (21) ◽  
pp. 1699-1706
Author(s):  
Giaan A. Álvarez Romero ◽  
Alberto Rojas Hernández ◽  
Ma. Teresa Ramírez Silva ◽  
Mario A. Romero Romo ◽  
Pablo Rogelio Hernández
Keyword(s):  
Acetic Acid ◽  
Glacial Acetic Acid ◽  
Thermodynamic Assessment ◽  
Analytical Response

scholarly journals Synthesis and Characterization of Substituted 4-Methoxy-1H-quinolin-2-ones

2010 ◽  
Vol 7 (3) ◽  
pp. 1066-1070 ◽  
Author(s):  
A. K. Ramasamy ◽  
V. Balasubramaniam ◽  
K. Mohan
Keyword(s):  
Acetic Acid ◽  
Malonic Acid ◽  
Sodium Methoxide ◽  
Glacial Acetic Acid ◽  
Second Step ◽  
H Nmr ◽  
Phosphorous Oxychloride ◽  
Ft Ir ◽  
Sodium Methoxide Solution

An efficient method for the synthesis of various substituted 4-methoxy-1H-quinolin-2-ones from various substituted aniline with malonic acid, phosphorous oxychloride, sodium methoxide and glacial acetic acid under different conditions is described. The title compounds were synthesized from three steps; the first step involved the synthesis of substituted 2, 4-dichloro quinoline from aniline (substituted), with malonic acid and phosphorous-oxychloride. In the second step, the substituted 2, 4 dichloro compounds was heated with freshly prepared methanolic sodium methoxide solution to give 2, 4-dimethoxy quinoline compounds, it was then refluxed with glacial acetic acid and hydrochloric acid to give the titled compounds in the final step. The purity of the synthesized compounds was confirmed by their C, H and N analysis and the structure was analyzed on the basics of Mass, FT-IR and1H NMR.

scholarly journals Synthesis and Characterization of Novel Biginelli Dihydropyrimidinone Derivatives Containing Imidazole Moiety

2019 ◽  
Vol 2019 ◽  
pp. 1-7 ◽  
Author(s):  
Mashooq Ahmad Bhat ◽  
Mohamed A. Al-Omar ◽  
Ahmed M. Naglah ◽  
Atef Kalmouch ◽  
Abdullah Al-Dhfyan
Keyword(s):  
Acetic Acid ◽  
Elemental Analysis ◽  
Efficient Method ◽  
Glacial Acetic Acid ◽  
Solvent Free ◽  
Synthesis And Characterization ◽  
Spectroscopic Methods ◽  
Free Condition ◽  
Solvent Free Condition

Enaminone, (2E)-1-[4-(1H-imidazol-1-yl) phenyl]-4-methylpent-2-en-1-one (II) was synthesized by refluxing 1-[4-(1H-imidazol-1-yl) phenyl] ethan-1-one (I) with dimethylforamide dimethylacetal (DMF–DMA) under solvent-free condition for 12 hours. Finally, the dihydropyrimidinone derivatives containing imidazole moiety (1–15) were obtained by reacting enaminone, (2E)-1-[4-(1H-imidazol-1-yl) phenyl]-4-methylpent-2-en-1-one (II) with urea and different substituted benzaldehydes in the presence of glacial acetic acid. Dihydropyrimidinone derivatives containing imidazole moiety were synthesized in excellent yield by means of a simple and efficient method. All the compounds were confirmed by elemental analysis. The structures of all the compounds were confirmed by modern spectroscopic methods.

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