Results 31 to 40 of about 2,718,627 (117)

New Synthesis of 7-azabicyclo[2.2.1]heptane-1-carboxylic acid [PDF]

, 2001
This report describes a new synthetic route to 7-azabicyclo[2.2.1]heptane-1-carboxylic acid (Ahc), a constrained proline analogue, in which the key step is the Diels-Alder reaction using methyl 2-benzamidoacrylate as dienophile.
Peregrina, J.M. [0000-0003-3778-7065], Avenoza, A. [0000-0002-5465-3555], Busto, J.H. [0000-0003-4403-4790], Rodríguez, F., Fernández-Recio, M.A. [0000-0001-8264-1984], Cativiela, C., Peregrina, J.M., Busto, J.H., Avenoza, A., Fernández-Recio, M.A.   +9 more
core   +1 more source

A comparison of thermal decompositions of Lithium-ion battery critical transition metal Ni, Mn and Co α-hydroxy carboxylic acid chelates and their acetates

Results in Chemistry
Ni, Mn and Co are the most widely used transition elements in current Li-ion batteries and the chelation of these elements with abundant and inexpensive α-hydroxy carboxylic acids is a sustainable recovery technique from used Li-ion battery wastes as ...
Ambar B. Shrestha, Tony L. Grady, Ananda S. Amarasekara   +2 more
doaj   +1 more source

Heterocycles [h]-Fused Onto 4-Oxoquinoline-3-Carboxylic Acid, Part VIII [1]. Convenient Synthesis and Antimicrobial Properties of Substituted Hexahydro[1,4]diazepino[2,3-h]quinoline-9-carboxylic acid and Its Tetrahydroquino[7,8-b]benzodiazepine Analog

Molecules, 2008
[1,4]Diazepino[2,3-h]quinolone carboxylic acid 3 and its benzo-homolog tetrahydroquino[7,8-b]benzodiazepine-3-carboxylic acid 5 were prepared via PPAcatalyzed thermal lactamization of the respective 8-amino-7-substituted-1,4-dihydroquinoline-3-carboxylic
Yusuf M. Al-Hiari, Rana Abu-Dahab, Mustafa M. El-Abadelah   +2 more
doaj   +1 more source

Diamondoids are not forever: microbial biotransformation of diamondoid carboxylic acids

Microbial Biotechnology, 2020
Summary Oil sands process‐affected waters (OSPW) contain persistent, toxic naphthenic acids (NAs), including the abundant yet little‐studied diamondoid carboxylic acids.
Benjamin D. Folwell, Terry J. McGenity, Corinne Whitby   +2 more
doaj   +1 more source

5-Methoxyphenanthrene-4-carboxylic Acid

, 1989
Lead tetraacetate oxidation of phenanthrene-4,5-dicarboxylic acid in acetonitrile with pyridine affords 5-hydroxyphenanthrene-4-carboxylic acid as its lactone , which can be methylated as the sodium salt, giving 5-methoxyphenanthrene-4-carboxylic ...
QN Porter, RG Gillis
core   +1 more source

Crystal structure of [1,1′:3′,1′′-terphenyl]-2′,3,3′′-tricarboxylic acid

Acta Crystallographica Section E: Crystallographic Communications, 2015
The asymmetric unit of the title compound, C21H14O6, comprises two symmetrically independent molecules that form a locally centrosymmetric hydrogen-bonded dimer, with the planes of the corresponding carboxylic acid groups rotated by 15.8 (1) and 17.5 (1)°
Daniel A. Decato, Orion B. Berryman
doaj   +1 more source

Development of an Ion Chromatography Method for the Analysis of Nitric Acid Oxidation Reactions of Common Sugars [PDF]

, 2008
The large scale nitric acid oxidation of common sugars into their corresponding aldaric acids is being investigated as an important source of potentially useful components for industrial applications such as polymers.
Davey, Cara-Lee
core  

Visible Light–Induced Decarboxylative Radical Addition of Heteroaromatic Carboxylic Acids to Alkenes at Room Temperature in Two‐Molecule Photoredox System

ChemistryOpen
The photoinduced decarboxylative radical addition of aryl carboxylic acids, including heteroaromatic carboxylic acids, to electron‐deficient alkenes is achieved in a two‐molecule photoredox system using a combination of biphenyl (BP) and 9,10 ...
Daisuke Suzuki, Ryoga Hashimoto, Toshiki Furutani, Mugen Yamawaki, Hirotsugu Suzuki, Yasuharu Yoshimi   +5 more
doaj   +1 more source

Lipoxygenase and Its Relationship with Ethylene During Ripening of Genetically Modified Tomato (Solanum lycopersicum)

Food Technology and Biotechnology, 2020
Research background. TomloxB is the main isoform of lipoxygenase associated with ripening and senescence of fruits. On the other hand, ethylene, a gaseous hormone, is essential for the regulation of ripening in climacteric fruits like tomatoes.
Arturo Alberto Velázquez- López, Javier De La Cruz-Medina, Hugo Sergio García, Gilber Vela-Gutiérrez, Cristóbal Torres-Palacios, Elizabeth León-García   +5 more
doaj   +1 more source

Valorization of Lignin by Partial Wet Oxidation Using Sustainable Heteropoly Acid Catalysts

Molecules, 2017
The production of carboxylic acids by partial wet oxidation of alkali lignin at elevated temperatures and pressures was studied experimentally. Two different heteropoly acids, phosphotungstic acid (H3PW12O40) and phosphomolybdic acid (H3PMo12O40), were ...
Abayneh Getachew Demesa, Arto Laari, Mika Sillanpää, Tuomas Koiranen   +3 more
doaj   +1 more source