Results 31 to 40 of about 2,731,051 (304)

Bromopyrrole alkaloids from the caribbean sponge Agelas cerebrum

Química Nova, 2011
Bioguided fractionation of Agelas cerebrum crude extract resulted in isolation of four bromopyrrole and four bromopyrrole aminoimidazole alkaloids, identified as 5-bromopyrrole-2-carboxylic acid (1), 4-bromopyrrole-2-carboxylic acid (2), 3,4-bromopyrrole-
Erik L. Regalado, Abilio Laguna, Judith Mendiola, Olivier P. Thomas, Clara Nogueiras   +4 more
doaj   +1 more source

Direct Boronic Acid Promoted Amidation of Carboxylic Acids with Poorly Nucleophilic Amines

, 2022
Direct amidation of carboxylic acids with poorly nucleophilic amines such as anilines is a notorious challenge in organic chemistry. Previously reported methodologies for direct amidation tend to report none or just a few examples with simple anilines ...
Zhou, Jingning, Paladino, Marco, Hall, Dennis G.   +2 more
core   +1 more source

Conformations of 2-phenyl-3-pyridylpropenoic acid (alpha-phenyl pyridylcinnamic acid) dimers – A computational study [PDF]

, 2005
Motivation. Cinnamic acid analogs are not only important parts of the shikimic acid metabolic pathway of higher plants but it is possible to assemble, particularly from those containing oxygen or nitrogen heteroatoms, various patterned structures kept ...
Pálinkó István, Pálinkó, István
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

Preparation of New 2,3-Diphenylpropenoic Acid Esters – Good Yields Even for the More Hindered Z Isomers [PDF]

, 2004
The potassium salt of E- and Z-2,3-diphenylpropenoic acids prepared in situ could be esterified efficiently in DMSO with the appropriate alkyl halides at room temperature.
Boros, László, Károly Felföldi, Pálinkó István, Felföldi, Károly, Pálinkó, István, István Pálinkó, Felföldi Károly, Károly Felföldi, Boros László, István Pálinkó, László Boros, László Boros   +11 more
core   +1 more source

Ethylene and auxin in the control of wood formation [PDF]

, 2003
This thesis considers aspects of the regulation of growth rate and fibre properties in forest trees. These properties are both genetically determined and influenced by environmental stimuli.
Hellgren, Jenny Maria
core   +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

Discerning protein pools by selective staining with self‐labeling tags

FEBS Letters, EarlyView.
Cell surface proteins have an intra‐ and extracellular pool. Combining genetic fusion to self‐labeling tags that can be addressed with small molecule fluorophores allows separating these pools. We highlight recent developments and techniques for state‐of‐the‐art interrogation of cell surface proteins in the complex tissue setting.
Kati Fischermanns, Johannes Broichhagen
wiley   +1 more source

One Carbon at a Time: Unlocking Iterative Carboxylic Acid Homologation [PDF]

The development of a direct and iterative protocol for carboxylic acid homologation has constituted a long-standing challenge in synthesis. We recently disclosed an efficient and practical strategy for the homologation of unmodified carboxylic acids ...
Silvi, Mattia, Wheatley, Emilie
core   +1 more source