Results 101 to 110 of about 18,349 (284)

Supramolecular liquid crystals formed by hydrogen bonding between a benzocrown-bearing stilbazole and carboxylic acids [PDF]

, 2000
The mesomorphism of hydrogen bonded complexes formed between 4'-carboxybenzo-15-crown-5 stilbazolyl ester (CBCSE) as proton acceptor and carboxylic acids as proton donors is discussed.
Gündogan, Bilgi, Binnemans, Koen
core   +1 more source

Iron-Catalyzed, Highly Regioselective Synthesis of α-Aryl Carboxylic Acids from Styrene Derivatives and CO₂ [PDF]

, 2016
The iron-catalyzed hydrocarboxylation of aryl alkenes has been developed using a highly active bench-stable iron­(II) precatalyst to give α-aryl carboxylic acids in excellent yields and with near-perfect regioselectivity.
Mark D. Greenhalgh (1717120), Stephen P. Thomas (1717129)   +1 more
core   +1 more source

Nickel(II) and copper(II) complexes of some pyridinecarboxylic acids [PDF]

, 1974
Complexes of nickel(11) and copper(11) with the ligands 6-methylpyridine-2-carboxylic, pyridine-2- carboxylic and pyridine-3-carboxylic acids have been prepared from non-aqueous media.
EC Watton, RS Vagg, VM Ellis
core   +1 more source

Perspectives on Synthetic Adducts (Salts) of Nitroxoline^TM and 2-Aminoquinolin-8-ol as Promising Antibacterial Agents

Chemistry Proceedings
The threatening phenomenon of antibiotic failure in the future determines the intensive research of antibacterial active compounds, which are promising candidates as antibiotics.
Tibor Maliar, Renata Gašparová, Mária Maliarová   +2 more
doaj   +1 more source

Peptide Thioester and Triazole Derivatives Through On‐Resin Dual‐Modification of Peptide Thiosulfonates

Angewandte Chemie International Edition, EarlyView.
An on‐resin dual‐modification strategy for peptides is presented, comprising S‐alkynylation of peptide thiosulfonates and regioselective iridium‐catalyzed azide–thioalkyne cycloaddition. This method reliably provides access to peptides with intricate non‐canonical modifications, being compatible with complex peptides, alkynes and azides.
Marius Werner, Agnes Bergmann, Chenxi Liu, Mira Behnam, Christian Klein, Franziska Thomas   +5 more
wiley   +1 more source

The role of proton transfer in multicomponent crystals of pyridine derivative with carboxylic acids [PDF]

, 2019
The estimation of the extent of proton transfer between proton donor/electron acceptors and proton acceptor/electron donor moieties, both in intra- and inter-molecular cases, can be considered an emerging approach in crystal engineering, aimed at ...
Cvetkovski, Aleksandar, Drakalska, Elena
core  

Anomeric Amide Enabled Divergent Synthesis of Unsymmetrical Ureas, Carbamates, Thioesters, and Amides From Aldehydes

Angewandte Chemie International Edition, EarlyView.
An anomeric amide‐enabled divergent aldehyde functionalization sequence provides one‐pot access to unsymmetrical ureas, carbamates, thiocarbamates, thioesters, and amides. Key to this transformation is the formation of N‐Boc‐hydroxamate intermediates, which serve as platforms for orthogonal activation via Lossen‐type rearrangements, single‐electron ...
Jasper L. Tyler, Meiyi Zeng, Julius Wiener, Marie‐Christin Leusmann, Colin Stein, Constantin G. Daniliuc, Frank Glorius   +6 more
wiley   +1 more source

Synthesis of S- and N,S-Heterocycle–Dipeptide Conjugates for Supramolecular Hydrogel Formation

Molecules
Small peptides with aromatic nuclei at the N-terminus have been shown to form bioactive, biocompatible, and biodegradable supramolecular peptide hydrogels.
Ana-Morgana G. P. Silva, Maria F. Martins, Carlos B. P. Oliveira, José A. Martins, Paula M. T. Ferreira, Maria-João R. P. Queiroz   +5 more
doaj   +1 more source

Spectroscopic and In Silico Determination of the Structural and Antioxidant Properties of Essential Oils From Lavandula Species Cultivated in the Silivri Region of Istanbul

Journal of the American Oil Chemists' Society, EarlyView.
ABSTRACT Plants are important sources of bioactive compounds that contribute to nutrition, health maintenance, and disease prevention. In this study, the chemical composition and antioxidant potential of essential oils obtained from Lavandula angustifolia “Sevtopolis” and Lavandula × intermedia cultivated in the Silivri region of Istanbul were ...
Bilge Bicak, Beray Kizilkaya, Serda Kecel Gunduz, Aliye Demet Demirag, Sabriye Percin Ozkorucuklu   +4 more
wiley   +1 more source

Revisiting Securidaca longipedunculata Seed Oil: Applying NMR and Mass Spectroscopy to Confirm the Presence of 2‐Acetyl‐1,3‐Diacyl–sn‐Glycerols and Conjugated Hydroxydienoic Fatty Acids

Journal of the American Oil Chemists' Society, EarlyView.
The manuscript confirms and expands on previous reports concerning the presence of unusual conjugated hydroxydienoic fatty acids and acetyl‐TAG in the seed oil of Securidaca longipedunculata. The location of acetate only at sn‐2 of TAG was conclusively shown by high resolution NMR and hydroxy seed fatty acids are characterized.
Mark A. Smith, Jianfeng Zhu, Jin‐Yue Sun   +2 more
wiley   +1 more source