Results 131 to 140 of about 24,929 (273)

Heterocycle-functionalized luminogens exhibiting aggregation-induced emission

, 2015
The development of a series of fluorescent materials including heterocycle-functionalized luminogens with aggregation-induced/enhanced emission (AIE/AEE), long wavelength emission, and high solid state fluorescence quantum efficiency is contemplated. The
Liu, Bin, Shi, Haibin, Li, Min, Ding, Dan, Tang, Benzhong, Zhao, Na, Lam, Jacky Wing Yip   +6 more
core  

A General Strategy for Five-Membered Heterocycle Synthesis by Cycloelimination of Alkynyl Ketones, Amides, and Thioamides

, 2016
A General Strategy for Five-Membered Heterocycle Synthesis by Cycloelimination of Alkynyl Ketones, Amides, and ...
Peter Wipf (134666), Stacey R. Rector (2991045), Leera T. Rahman (3046242)   +2 more
core   +1 more source

Funktionalisierung von Peptiden auf der festen Phase im späten Synthesestadium

Angewandte Chemie, EarlyView.
Peptidmodifikationen sind für die Kontrolle der Eigenschaften von Peptidwirkstoffen von entscheidender Bedeutung. Daher sind Strategien, die einen effizienten und schnellen Einbau nicht‐kanonischer Modifikationen in Peptide in Parallelformaten ermöglichen, sehr gefragt.
Marius Werner, Truc Lam Pham, Franziska Thomas   +2 more
wiley   +1 more source

Isolation of a Highly Reactive CBNC Heterocumulene via Azidoborylene Photolysis: Facile Access to a Crystalline Dioxaborirane

Angewandte Chemie, EarlyView.
Azidoborylene photolysis results in the isolation of a reactive C═B═N═C heterocumulene bearing an ambiphilic boron centre. Addition of 3O2 to this species results in the clean conversion to a unique example of a dioxaborirane. ABSTRACT Oxidation of the formal boron(0) complex MeCAAC2B in the presence of tetrabutylammonium azide leads to the formation ...
Hayley King, Vignesh Pattathil, William Kennedy, Robert K. Szilagyi, Conor Pranckevicius   +4 more
wiley   +2 more sources

G^C Quartet  A DNA-Inspired Janus-GC Heterocycle: Synthesis, Structural Analysis, and Self-Organization

, 2016
G^C Quartet  A DNA-Inspired Janus-GC Heterocycle: Synthesis, Structural Analysis, and Self ...
Brian O. Patrick (155965), Ali Asadi (252077), David M. Perrin (1795915)   +2 more
core   +1 more source

1,7‐Digallatetracarborane: Between Nucleophilic closo‐Cluster and “Inverse Sandwich” Digallylene

Angewandte Chemie, EarlyView.
A dianionic π‐ligand is used to make a Janus‐type twofold complex with low‐valent gallium Ga(+I). The resulting compound can be seen as and reveals the reactivity of both: a Wade‐type closo‐carborane cluster with nucleophilic Ga‐sites, as well as π‐ligand stabilized Ga(I) atoms in an inverse sandwich compound.
Julijan Sarcevic, Tobias Heitkemper, Niklas Mehner, Maximilian Kubis, Christian P. Sindlinger   +4 more
wiley   +2 more sources

Nucleophilic activity of a linked bis{guanidine} leading to formation of a dicationic C4N4-heterocycle

, 2007
The methylene-linked bis{guanidine}, H2C{hpp}2 (hppH = 1,3,4,6,7,8-hexahydro-2H-pyrimido[1,2-a]pyrimidine), displays nucleophilic activity towards organic halides, including the activation of dichloromethane under ambient conditions to afford the ...
Steven Lee (72507), Steven F Lee (16062338), Martyn P Coles (14018547), Sarah H Oakley (16059197), Peter B Hitchcock (16057433), Guillerma Estiu (16122872)   +5 more
core  

A 12-Membered Inorganic Heterocycle:  Synthesis and Structural Characterization of a Bimetallic Chromium(VI) Siloxane Complex

, 2016
A 12-Membered Inorganic Heterocycle:  Synthesis and Structural Characterization of a Bimetallic Chromium(VI) Siloxane ...
Rutger A. van Santen (1474456), Anthony L. Spek (1913542), Hendrikus C. L. Abbenhuis (2371645), Martinus L. W. Vorstenbosch (2973570), Wilberth J. J. Smeets (2969823)   +4 more
core   +1 more source

Copper(II/III) Redox Couple Enables C─H Methylation via a Radical Mechanism Analogous to SAM Enzymes

Angewandte Chemie, EarlyView.
Biological C–H methylation proceeds through radical pathways mediated by one‐electron redox cofactors, yet no synthetic model has reproduced this reactivity. Here, we report the first isolable Cu(II/III)–methyl complexes that mediate C–H methylation through hydrogen atom transfer and methyl radical rebound.
Emily N. Doss, Curtis E. Moore, Shiyu Zhang   +2 more
wiley   +2 more sources

Synthesis and One‐Electron Reduction of Donor‐Acceptor‐Stabilized SiII–EII–SiII Trimetallylenes (E = Ge, Sn, Pb)

Angewandte Chemie, EarlyView.
The first isolable trimetallylenes (SiII)2EII (E = Ge, Sn, Pb) with pπ‐type silanylidenyl donors have been synthesized, having donor–acceptor electronic structures that give rise to near‐infrared absorption and enable access to bis(silanylidenyl)‐supported GeI and SnI radical anions upon one‐electron reduction with elemental potassium. ABSTRACT Herein,
Chaopeng Hu, Shenglai Yao, Christian Lorent, Matthias Driess   +3 more
wiley   +2 more sources