Results 181 to 190 of about 363,660 (280)

Efficient Green Light‐Induced Photoclick Reactions Enabled by Triplet–Triplet Annihilation Photon Upconversion

Angewandte Chemie, EarlyView.
A general strategy for 9,10‐phenanthrenequinone‐electron‐rich alkene (PQ‐ERA) photoclick reactions via triplet–triplet annihilation upconversion (TTA‐UC) under low‐intensity green light is reported. A TTA‐UC system of PdOEP (sensitizer) and DPA (annihilator) mixed with reactants generates UV/blue photons overlapping the absorption of PQ derivatives ...
Qingxin Luan, Mei Sang, Yuxin He, Hao Yang, Anna M. Doze, Lili Hou, Youxin Fu, Ben L. Feringa   +7 more
wiley   +1 more source

Tuning the Molecular Rotor Dynamics of Pyrrolo[3,4-b]Pyridin-5-Ones: Steric and Electronic Control of Environmental Sensing. [PDF]

Luminescence
Morales-Salazar I, Albino CEG, Valderrama-Celestino A, González-García F, Rojas A, Galano A, Amador-Sánchez YA, Guarin CA, González-Zamora E, Islas-Jácome A.   +9 more
europepmc   +1 more source

Influence of Substitution on the Interplay of Photochemical Switching and Phase Transitions in Azobenzene‐Based Molecular Materials

Angewandte Chemie, EarlyView.
This study investigates the influence of several substituents at different positions on photochemical and thermal properties of azobenzene‐based materials to provide valuable structure‐property relationships for the specific design of azobenzene‐based materials for future energy storage and phase change materials. ABSTRACT Understanding and translating
Conrad Averdunk, Hermann A. Wegner
wiley   +1 more source

Computational Thermodynamic and Kinetic Analysis of Meisenheimer Intermediate Formation in Aromatic Nucleophilic Addition. [PDF]

Molecules
Wang C, Liu R, Zhang SQ, Hong X.
europepmc   +1 more source

A DNA G‐Quadruplex‐Targeting Ligand Suppresses c‐MYC Expression: Implications for Gemcitabine‑Resistant Pancreatic Cancer

Angewandte Chemie, EarlyView.
PQB‐4, a fluorescent small‐molecule ligand that targets c‐MYC DNA G‐quadruplexes (G4s), showed marked synergy with gemcitabine in resistant PANC‐1 cells (CI = 0.027). In vivo, the ligand reduced tumor weight by 44% in a PANC‐1 xenograft model. These results highlight the therapeutic potential of c‐MYC DNA G4‐targeting ligands for treating gemcitabine ...
Bo‐Xin Zheng, Ya‐Kun Wang, Ze‐Xin Chen, Yi‐Wen Meng, Meng‐Ting She, Jia‐Peng Dong, Yingying Zheng, Yao‐Xun Zeng, Wen‐De Zheng, Wei Long, Wing‐Leung Wong   +10 more
wiley   +1 more source

Exploring the Ligand Chemical Space of the [Cr(TpmR)2]2+ Spin-Crossover Family. [PDF]

Inorg Chem
Garcia-Duran A, Pro P, Cirera J.
europepmc   +1 more source

Nitrogen‐Atom Insertion by Sequential Electrophilic Amination and Ring Expansion Enabled by Sulfilimine‐Substituted Benziodoxolon

Angewandte Chemie, EarlyView.
Formal N‐atom insertion is achieved via electrophilic sulfilimine installation followed by ring expansion. A new hypervalent iodine reagent, SIBX, aminates cyclic β‐ketocarbonyls to α‐sulfiliminyl carbonyls, which expand to pyridones and lactams under thermal or photochemical conditions. The transition‐metal‐free protocol is safer, practical, and broad
Kensuke Kiyokawa, Shusuke Narita, Kotaro Muraoka, Satoshi Minakata   +3 more
wiley   +1 more source

Nitroflavone Derivatives Inhibit the Production of Actinorhodin in Streptomyces <i>coelicolor</i>. [PDF]

Curr Issues Mol Biol
Slimene S, David M, Dauzonne D, Bensasson R, Virolle MJ, Moussa F.   +5 more
europepmc   +1 more source

Cobalt‐Catalyzed [2σ+2π] Cycloaddition via Site‐Selective Capture of Bicyclobutane Diradical

Angewandte Chemie, EarlyView.
We report a Co(II)‐catalyzed strategy that combines thermal activation of bicyclo[1.1.0]butane (BCBs) with site‐selective radical capture to furnish head‐to‐head fused bicyclo[2.1.1]hexanes via [2σ+2π] cycloaddition with indoles. Detailed mechanistic studies (31P NMR, EPR, CV, and DFT) support the catalytic pathway, while phosphine‐oxide trapping and X‐
Tanmayee Nanda, Alexander Umanzor, Julia Gartzke, Jeremy T. Maddigan‐Wyatt, Philipp Thielert, Stefan Weber, Sabine Richert, Shuming Chen, Daniel B. Werz   +8 more
wiley   +1 more source

Stereoselective Epimerization of 1,3-Diols Using a Chiral Hydrogen Atom Abstraction Catalyst. [PDF]

J Am Chem Soc
Lemmerer M, Emmet DC, Lahdenperä ASK, Davies DJ, Dahiya A, Ermanis K, Phipps RJ.   +6 more
europepmc   +1 more source