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 +4 more
doaj +1 more source
Nickel-Mediated Photoreductive Cross Coupling of Carboxylic Acid Derivatives for Ketone Synthesis [PDF]
, 2021 A simple photochemical, nickel-catalyzed synthesis of ketones starting from carboxylic acids is presented. Hantzsch-ester (HE) functions as a cheap, green and strong photoreductant upon visible-light excitation to facilitate radical generation and also ...
Lisa, Kammer +3 more
core +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 +11 more
core +1 more source
Assessing the Conformational Equilibrium of Carboxylic Acid via QM and MD Studies on Acetic Acid [PDF]
, 2018 Accurate hydrogen placement in molecular modeling is crucial for studying the interactions and dynamics of biomolecular systems. It is difficult to locate hydrogen atoms from many experimental structural characterization approaches, such as due to the ...
David, Mobley +3 more
core +1 more source
Accessing diverse azole carboxylic acid building blocks via mild C-H carboxylation: Parallel, one-pot amide couplings and ML-guided substrate scope design [PDF]
, 2022 This manuscript describes a mild, functional group tolerant, and metal-free C-H carboxylation that enables direct access to azole-2-carboxylic acids, followed by amide couplings in one pot.
Michael, Shevlin +4 more
core +1 more source
Results in ChemistryNi, 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 +2 more
doaj +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
SHORT-CHAIN CARBOXYLIC-ACIDS, A NEW CLASS OF TERATOGENS - STUDIES OF POTENTIAL BIOCHEMICAL-MECHANISMS [PDF]
, 1986 Certain short-chain carboxylic acids (SCCA) appear to share a common teratogenic potential, although the structural requirements for activity remain obscure.
Coakley, ME +5 more
core +1 more source
Carboxylic Acid-Catalyzed Controlled Ring-Opening Polymerization of Sarcosine N-Carboxyanhydride: Fast Kinetics, Ultra-High Molecular Weight, and Mechanistic Insights [PDF]
, 2023 The rapid and controlled synthesis of high molecular weight (MW) polysarcosine (pSar), a potential polyethylene glycol (PEG) alternative, via the ring-opening polymerization (ROP) of N-carboxyanhydride (NCA) is rare and challenging.
Hua, Lu +6 more
core +1 more source
Structural insights into an engineered feruloyl esterase with improved MHET degrading properties
FEBS Letters, EarlyView.A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa +5 more
wiley +1 more source