Titrimetric Determination of Carboxylic Acid Chloride

1960 ◽  
Vol 32 (9) ◽  
pp. 1166-1168 ◽  
Author(s):  
L. J. Lohr
Keyword(s):  
Carboxylic Acid ◽  
Acid Chloride ◽  
Carboxylic Acid Chloride ◽  
Titrimetric Determination

Synthesis of amino acid diazoketones

1986 ◽  
Vol 64 (11) ◽  
pp. 2097-2102 ◽  
Author(s):  
George R. Pettit ◽  
Paul S. Nelson
Keyword(s):  
Amino Acid ◽  
Carboxylic Acid ◽  
Acid Chloride ◽  
Low Temperatures ◽  
Oxalyl Chloride ◽  
Acyl Chloride ◽  
Carboxyl Group ◽  
Carboxylic Acid Chloride ◽  
Active Esters ◽  
Active Ester

A study of carboxylic acid → diazoketone conversion was pursued employing the γ-carboxyl group of otherwise protected L-glutamic acids. The Arndt–Eistert route employing carboxylic acid chloride intermediates was found best (52% yield, 5b), performed at very low temperatures employing oxalyl chloride in dimethylformamide–tetrahydrofuran followed by diazomethane at −23 °C. Alternatively, substitution of a mixed carbonic anhydride for the acyl chloride led to very similar yields (57% of 5b) of diazoketones (5). Among a series of active ester intermediates (7) examined, only the ODnp (7d) and SPfp (7f) esters were found to react (23–26% yield), at least partially, with diazomethane. The latter two reactions appear to represent the first such examples employing active esters.

Spectrophotometric and titrimetric determination of carboxylic acid anhydrides

1984 ◽  
Vol 56 (12) ◽  
pp. 2157-2160 ◽  
Author(s):  
Krishna K. Verma ◽  
Pramila. Tyagi
Keyword(s):  
Carboxylic Acid ◽  
Titrimetric Determination ◽  
Acid Anhydrides

Synthesis and Reactions of Some 1H-Pyrazole-3 Carboxylic Acid Chloride

2009 ◽  
Vol 15 (4) ◽  
Author(s):  
İhan Özer İlhan ◽  
Sevgi Zühal ◽  
Zülbiye Önal ◽  
Emin Saripinar
Keyword(s):  
Carboxylic Acid ◽  
Acid Chloride ◽  
Carboxylic Acid Chloride

scholarly journals Crystal structures of 1′-aminocobaltocenium-1-carboxylic acid chloride monohydrate and of its azo dye 1′-[2-(1-amino-2,6-dimethylphenyl)diazen-1-yl]cobaltocenium-1-carboxylic acid hexafluoridophosphate monohydrate

2019 ◽  
Vol 75 (2) ◽  
pp. 208-213 ◽  
Author(s):  
Markus Jochriem ◽  
Klaus Wurst ◽  
Holger Kopacka ◽  
Benno Bildstein
Keyword(s):  
Carboxylic Acid ◽  
Water Molecule ◽  
Functional Groups ◽  
Acid Chloride ◽  
Supramolecular Network ◽  
Carboxylic Acid Chloride ◽  
Positional Disorder ◽  
Counter Ion ◽  
Chloride Monohydrate ◽  
Hydrogen Bonded

1′-Aminocobaltocenium-1-carboxylic acid chloride, [Co(C5H6N)(C6H5O2)]Cl·H2O, (3), and its azo derivative 1′-[2-(1-amino-2,6-dimethylphenyl)diazen-1-yl]cobaltocenium-1-carboxylic acid hexafluoridophosphate, [Co(C13H14N3)(C6H5O2)]PF6·H2O (5) were obtained from cobaltocenium-1,1′-dicarboxylic acid hexafluoridophosphate by converting one carboxyl group to its chlorocarboxyl derivative followed by chloride/azide exchange, Curtius rearrangement, diazotiation and azo coupling with 2,6-dimethylaniline. Both title compounds crystallize as their monohydrates. In the crystal structure of 3, both functional groups lie in the same direction, with the Cp rings being nearly eclipsed, and participate in an extended hydrogen-bonded supramolecular network including the counter-ion and the water molecule of crystallization. Although the functional groups in 5 are somewhat further apart, bearing a greater torsion angle with the Cp rings now staggered, a similar supramolecular network is observed with not only the carboxylic acid and azo groups, but also with the more remote amino group participating in a hydrogen-bonded network, again including the counter-ion and the water molecule. The hexafluoridophosphate ion shows positional disorder. Compound 3 was refined as an inversion twin. In 5, each of the six F atoms is disordered over two sets of sites in a 1:1 ratio.

ChemInform Abstract: REACTIONS OF 2-PHENYL-4-CHLOROQUINOLINE-3-CARBOXYLIC ACID CHLORIDE

1975 ◽  
Vol 6 (12) ◽  
pp. no-no
Author(s):  
WANDA ZANKOWSKA-JASINSKA ◽  
MARIAN BALA ◽  
JAN BOKSA
Keyword(s):  
Carboxylic Acid ◽  
Acid Chloride ◽  
Carboxylic Acid Chloride

Über die Umsetzung von Benzylmalonylchlorid mit verschiedenen Natriumsalzen von Carbonsäuren / The Reaction of Benzylmalonyl Chloride with Sodium Salts of Carboxylic Acids

1972 ◽  
Vol 27 (5) ◽  
pp. 528-530 ◽  
Author(s):  
Helga Wittmann ◽  
Helmut Rathmayr
Keyword(s):  
Carboxylic Acid ◽  
Carboxylic Acids ◽  
Acid Chloride ◽  
Sodium Benzoate ◽  
Sodium Acetate ◽  
The Other ◽  
Carboxylic Acid Chloride ◽  
Sodium Salts ◽  
Other Hand ◽  
Sodium Phenylacetate

Benzylmalonyl Chloride reacts in the presence of sodium acetate in boiling benzene to give tribenzyl-phloroglucinol-triacetate, however with sodium chloroacetate to 3,5-dibenzyl-6-phenethylpyran-2,4-dion. In both cases trimerisation of benzylketene or benzylketene carboxylic acid chloride occurs. On the other hand, benzylmalonylchloride reacts with sodium benzoate and sodium phenylacetate via a dimeric benzylketene carboxylic acid chloride under the loss of phosgene to yield cyclopentadienyl derivatives.

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