Results 151 to 160 of about 18,411 (287)

Metal‐Ion Regulated Light‐Free Z→E Isomerization of Azobenzene Glycomacrocycle

Chemistry – A European Journal, EarlyView.
Metal ion‐catalyzed Z→E isomerization of photoswitchable azobenzene glycomacrocycle: A new azobenzene‐based glycomacrocycle is capable of forming a 1:1 complex with divalent metal ions in both E‐ and Z‐isomers. The complexes undergo light‐free Z→E isomerization in a timescale spanning from seconds to weeks.
Yang Zhou, Jinbiao Jiao, Mathieu Lordez, Jean‐Yves Salpin, Juan Xie   +4 more
wiley   +1 more source

Meso-Strap Engineering of Aromaticity Redistribution in Porphyrinoids. [PDF]

Angew Chem Int Ed Engl
Ye M, Xiao B, Xu L, Rao Y, Yin B, Zhou M, Osuka A, Song J.   +7 more
europepmc   +1 more source

A Unified Approach for the Synthesis of Conformationally Locked and sp2‐sp3 Fused Hybrids

Chemistry – A European Journal, EarlyView.
This study presents a systematic platform to build rigid sp2–sp3 hybrids via benzyne cycloadditions. Arene‑fused bicyclic oxa‐, aza‐, and carbocycles are converted into medicinally relevant amino acids and applied to Enalapril analogues synthesis. The hybrids combine aromatic interactions with 3D rigidity, tuning lipophilicity, pKa, and solubility ...
Ervis Saraci, Federica Plavi, Giovanni Viscardi, Chad N. Ungarean, Massimo Boiocchi, Christophe Salome, Quentin Lefebvre, Thomas C. Fessard, David Sarlah   +8 more
wiley   +1 more source

Controlled oxidation of pyrroles: synthesis of highly functionalized γ-lactams

, 2013
The oxidation of pyrroles usually leads to uncontrolled polymerization and decomposition. To overcome this problem, the controlled oxidation of substituted pyrroles with Dess-Martin periodinane is reported.
Jason Smith (14749684), Howard, JK (15544202), Hyland, CJT (15535802), Just, J (15544205)   +3 more
core  

Cyclopropylamine‐Derived Distonic Iminium Radicals: Photoinduced Strategies in Chemo‐ and Stereo‐Selective Synthesis

Chemistry – A European Journal, EarlyView.
Cyclopropylamines have emerged as powerful photocatalytic building blocks. Upon light‐induced single‐electron oxidation, they undergo strain‐release ring opening to generate distonic iminium radicals that enable diverse transformations, including ring‐opening functionalization, formal [3 + 2] cycloadditions, radical cascades, and asymmetric bond ...
Maria Chiara Cabua, Alberto Luridiana, Francesco Secci, Emanuele Cocco   +3 more
wiley   +1 more source

Cascade transformation of 2-(diazoacetyl)-2<i>H</i>-azirines to 2-aroyl-3-hydroxy-1<i>H</i>-pyrroles via condensation with aromatic aldehydes. [PDF]

Beilstein J Org Chem
Zanakhov TO, Galenko EE, Novikov MS, Khlebnikov AF.   +3 more
europepmc   +1 more source

Coordination Chemistry of Boron Subphthalocyanine With BINOL Derivatives: Unexpected Oxidation to Oxa[4]Helicene and Properties of the Resulting Axially Coordinated Complexes Containing Oxa[4]Helicene and/or BINOL Derivatives

Chemistry – A European Journal, EarlyView.
Treatment of BINOL with a boron subphthalocyanine derivative resulted in the formation of a complex coordinated to an oxa[4]helicene derivative, which is generated via a ring‐closure reaction of BINOL. In contrast, treatment of the monomethyl ether of 1,1′‐bi‐2‐naphthol (BINOL) afforded the expected axially coordinated complex.
Shafikul Islam, Kazuyuki Asahi, Hiroyuki Nishikawa, Daiki Tauchi, Masashi Hasegawa, Ken‐ichi Sugiura   +5 more
wiley   +1 more source

Direct Access to the Simplest <i>N</i>‑Substituted Pyrroles from Furans Enabled by Tailored Photocatalysts. [PDF]

JACS Au
Byeon H, Hong H, Lee DH, Park Y, Ha T, Kim HE, Park Y.   +6 more
europepmc   +1 more source

Anion‐Selective Channels Formed by Synthetic 13‐Mer Chimeric α ‐Peptide‐Oligourea Foldamers

Chemistry – A European Journal, EarlyView.
Synthetic 13‐mer α‐peptide‐oligourea chimeric foldamers self‐assemble into supramolecular ion channels, demonstrating high ion transport activity with distinct anion selectivity in lipid membranes. This study supports the design of bioinspired functional foldamer‐based channels for synthetic ion transport applications.
Chiranjit Dutta, Dandan Su, Pannaga Krishnamurthy, Zhaoxing Li, Jianwei Li, Morgane Pasco, Min Luo, Mihail Barboiu, Gilles Guichard, R. Manjunatha Kini, Prakash Kumar   +10 more
wiley   +1 more source

Solid-phase microextraction as a green sample preparation strategy for volatile organic compound profiling in coffee: a review with AGREEprep-based evaluation. [PDF]

NPJ Sci Food
Syrgabek Y, Fuente-Ballesteros A, Zuin Zeidler VG.   +2 more
europepmc   +1 more source