ChemInform Abstract: Quinazoline Carboxylic Acids. Part 14. Synthesis of 1,2,3-Benzotriazinone Benzoic Acids.

1986 ◽  
Vol 17 (43) ◽  
Author(s):  
M. SUESSE ◽  
S. JOHNE
Keyword(s):  
Carboxylic Acids ◽  
Benzoic Acids

scholarly journals Copper mediated decarboxylative direct C–H arylation of heteroarenes with benzoic acids

2016 ◽  
Vol 52 (7) ◽  
pp. 1432-1435 ◽  
Author(s):  
Tuhin Patra ◽  
Sudip Nandi ◽  
Santosh K. Sahoo ◽  
Debabrata Maiti
Keyword(s):  
Molecular Oxygen ◽  
Carboxylic Acids ◽  
Dual Role ◽  
Benzoic Acids

Copper mediated decarboxylative direct C–H arylation of 5-membered heteroarenes with aryl carboxylic acids is developed using the molecular oxygen as sole oxidant. Copper plays the dual role in decarboxylation and C–H arylation.

Exhaustive C-methylation of carboxylic acids by trimethylaluminium: A new route to t-butyl compounds

1974 ◽  
Vol 27 (8) ◽  
pp. 1665 ◽  
Author(s):  
A Meisters ◽  
T Mole
Keyword(s):  
Carboxylic Acid ◽  
Benzoic Acid ◽  
Carboxylic Acids ◽  
Cinnamic Acid ◽  
Benzoic Acids ◽  
Naphthoic Acid ◽  
Triphenylacetic Acid

Carboxylic acids are exhaustively C-methylated to t-butyl compounds by excess trimethylaluminium at c. 120�. Benzoic acid for example, gives t-butylbenzene. Similarly methylated are o-fluoro-, o-bromo-, and m-chloro-benzoic acids, 5-chloro-3-phenylsalicylic acid, 1-naphthoic acid, palmitic, oleic and undec-10-enoic acids. Adamantane-1-carboxylic acid gives mostly l-isopropenyladaman- tane, along with some 1-t-butyladamantane. Cinnamic acid gives mainly the allylically rearranged 2-methyl-4-phenylpent-2-ene. Triphenylacetic acid behaves atypically; 1,1,1-triphenylpropan-2-one and 3,3,3-triphenylpropyne result.

INHIBITION OF CATALASE BY CARBOXYLIC ACIDS RELATED TO DISSOCIATION AND ASSOCIATION OF THE APOPROTEIN

1962 ◽  
Vol 40 (1) ◽  
pp. 1327-1334 ◽  
Author(s):  
Michio Itoh ◽  
Yasuharu Nakamura ◽  
Kazuo Shibata
Keyword(s):  
Absorption Spectrum ◽  
Formic Acid ◽  
Carboxylic Acids ◽  
Free Acid ◽  
Second Step ◽  
Benzoic Acids ◽  
Reagent Concentration ◽  
Inhibitory Effects ◽  
Different Types ◽  
Aliphatic Carboxylic Acids

The inhibitory effects of aliphatic and aromatic carboxylic acids (formic, acetic, propionic, butyric, benzoic, and salicylic acids) on catalase at pH 7.0 were studied by measuring the catalatic activity as a function of reagent concentration, and the results were correlated with the data obtained simultaneously by spectroscopic and ultracentrifugal analyses. The inhibition by salicylic and benzoic acids proceeds in two steps. In the first step, the activity drops to a certain level, and the sedimentation peak of the native catalase is unaltered. The second step of inhibition is accompanied by the dissociation of the catalase molecule into subunits, and the absorption spectrum is changed greatly. The inhibition by the aliphatic carboxylic acids except formic acid proceeds also in two steps in which the second step of inhibition is accompanied by the association of the catalase molecules. The inhibition by formic acid obeys the mechanism of the combination between heme and the free acid rather than its anion. These different types of inhibitions at neutral pH are discussed in relation to the data obtained previously at acidic pH's.

Oxidative C-H Acyloxylation of Acetone with Carboxylic Acids under Iodine Catalysis

Synthesis ◽  
2020 ◽  
Author(s):  
Xiao-Yu Zhou ◽  
Xia Chen
Keyword(s):  
Carboxylic Acids ◽  
Sodium Chlorite ◽  
Benzoic Acids ◽  
Aromatic Carboxylic Acids ◽  
Substituted Benzoic Acids

Iodine catalyzed oxidative C(sp3)-H acyloxylation of acetone with carboxylic acids has been developed. The method employs an iodide as catalyst and sodium chlorite as oxidant. Substituted benzoic acids, naphthoic acids and hetero-aromatic carboxylic acids can be used, and 2-oxopropyl carboxylates are obtained with good to excellent yields.

INHIBITION OF CATALASE BY CARBOXYLIC ACIDS RELATED TO DISSOCIATION AND ASSOCIATION OF THE APOPROTEIN

1962 ◽  
Vol 40 (10) ◽  
pp. 1327-1334 ◽  
Author(s):  
Michio Itoh ◽  
Yasuharu Nakamura ◽  
Kazuo Shibata
Keyword(s):  
Absorption Spectrum ◽  
Formic Acid ◽  
Carboxylic Acids ◽  
Free Acid ◽  
Second Step ◽  
Benzoic Acids ◽  
Reagent Concentration ◽  
Inhibitory Effects ◽  
Different Types ◽  
Aliphatic Carboxylic Acids

The inhibitory effects of aliphatic and aromatic carboxylic acids (formic, acetic, propionic, butyric, benzoic, and salicylic acids) on catalase at pH 7.0 were studied by measuring the catalatic activity as a function of reagent concentration, and the results were correlated with the data obtained simultaneously by spectroscopic and ultracentrifugal analyses. The inhibition by salicylic and benzoic acids proceeds in two steps. In the first step, the activity drops to a certain level, and the sedimentation peak of the native catalase is unaltered. The second step of inhibition is accompanied by the dissociation of the catalase molecule into subunits, and the absorption spectrum is changed greatly. The inhibition by the aliphatic carboxylic acids except formic acid proceeds also in two steps in which the second step of inhibition is accompanied by the association of the catalase molecules. The inhibition by formic acid obeys the mechanism of the combination between heme and the free acid rather than its anion. These different types of inhibitions at neutral pH are discussed in relation to the data obtained previously at acidic pH's.

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