Results 101 to 110 of about 9,273,531 (285)

Tunable p–p Interactions Along Linear Chains Control Metavalent Bonding in Chalcogenide Heterostructures

Advanced Science, EarlyView.
Substitution of Sr at the Pb site within an atomic plane of PbTe perturbs the p–p hopping network. Since Sr does not support the p–p interaction key to metavalent bonding along (‐Pb‐Te‐) chains, long‐range electronic charge transfer in response to displacement of Pb is stalked at the Sr site.
Sakshi Verma, Kanishka Biswas, Umesh V. Waghmare, C. N. R. Rao   +3 more
wiley   +1 more source

Novel Functionalized Pyrrolopyridines to Target Brk

Molecules
Background: Increasing resistance against protein kinase inhibitors used in cancer therapies enforces the search for novel target structures to be addressed with favourable small-molecule inhibitors.
Erik Schmidt, Jannis von Veh, Anne-Christin Sarnow, Wolfgang Sippl, Julian Kowalski, Niels Heise, Frank Totzke, Andreas Hilgeroth   +7 more
doaj   +1 more source

Electrochemically Driven Regioselective Radical Functionalization of Allenes: Scope and Mechanistic Insights

Advanced Science, EarlyView.
Allenes emerge as powerful platforms for electrochemical functionalization through radical pathways. Selective radical addition at the central carbon triggers anodic oxidation and intramolecular cyclization, enabling efficient synthesis of oxazolines and oxazolidine‐2‐imines without external oxidants.
Pranjal Pyne, Prateek Saini, Rohel Hoque, Shivam Pandey, Srinivasan Ramakrishnan, Chandra M. R. Volla   +5 more
wiley   +1 more source

NMR characterization of substituent effects in cation–π interactions

, 2012
Substituent effects in C6H5X…M+ (M+ = Li+, Na+, K+, and ) systems have been characterized using isotropic nuclear magnetic shielding constants (σ). Good linear relationship between σ and the Hammett substituent constant σp is established which suggests ...
Suresh, Cherumuttathu H., Cherumuttathu H. Suresh, Fareed Bhasha Sayyed, Sayyed, Fareed Bhasha   +3 more
core   +1 more source

Local Solvent Ordering Drives Supramolecular Chirality Inversion

Advanced Science, EarlyView.
Local solvent organization is shown to govern supramolecular chirality by selecting distinct chiral assembly pathways. A subtle change in water‐DMSO composition reverses the helical sense of a chiral perylene bisimide, while heating induces an irreversible thermal inversion to a more stable enantiomorph.
Triza Pal, Akta Singh, Subinoy Adhikari, Jagannath Mondal, Debangshu Chaudhuri   +4 more
wiley   +1 more source

Nickel‐Catalyzed Three‐Component Difluoroalkylation‐Amination for the Direct Access to Anti‐Inflammatory β‐Difluoroalkyl Amines

Advanced Science, EarlyView.
A nickel‐catalyzed three‐component reductive fluoroalkylation‐amination strategy of N‐vinylamides for the direct access to the α‐amidyl‐β‐difluoroalkyl amines was reported here. The synthetic method features with broad substrate scope, mild conditions, high functional group tolerance, and convenience to handle.
Chang Xu, Fangting Ma, Fan Ding, Luyan Wang, Yunxi Li, Yunzhi He, Xingang Zhang, Siyu He, Dandan Liu   +8 more
wiley   +1 more source

A C‐Nucleoside Analogue of Cordycepin With High Metabolic Stability and Potent Anti‐Psoriatic Activity via Microneedle Delivery

Advanced Science, EarlyView.
This work identified CPD3a as a potent, stable C‐nucleoside cordycepin derivative. When formulated into microneedle array for topical treatment, it ameliorated psoriasis by rebalancing immunity and enhancing antioxidant defenses. ABSTRACT Psoriasis is a chronic inflammatory disorder characterized by immune dysregulation and epidermal hyperplasia ...
Wenfang Pan, Xinyue Shao, Yuanchen Zhong, Xujie Sun, Lixuan Yin, Zongyan He, Tianqun Lang, Yuanchao Xie   +7 more
wiley   +1 more source

Substituent effects on the thermochemistry and electrochemistry of free radicals

, 1986
NRC publication ...
Kanabus-Kaminska, J. M., Hawari, J. A., Wayner, D. D. M., Griller, D.   +3 more
core  

Cobalt‐Catalyzed Asymmetric Construction of Boron Stereocenters With C–N Axial Chirality

Advanced Science, EarlyView.
A cobalt/Salox‐catalyzed one‐pot annulation enables enantioselective formation of B‐stereogenic centers and C─N axial chirality via C─H/N─H annulation, affording diverse fluorescent products with high stereocontrol and optoelectronic potential. ABSTRACT The efficient construction of boron stereogenic centers alongside axial chirality remains a ...
Subramani Kumaran, Harihara Subramanian Ravi Sankar, Pritam Maity, J. Richard Premkumar, Abir Das, Basker Sundararaju   +5 more
wiley   +1 more source

Substituent effects on imidazole derivatives

, 2010
Üç bölümden oluşan bu tez 1,3-disübstitüye imidazolyum bromürlerin (1-5) sentezi ve katalitik özellikleriyle ilgilidir. Birinci bölüm imidazollere ait temel bilgiler, önemi ve kullanımları hakkında kısa bir derlemedir. İkinci bölümde deneysel veriler ayrıntılı bir biçimde açıklanmıştır. Üçüncü bölüm 1,3-disübstitüye imidazolyum tuzlarının sentezi, yapı
openaire   +2 more sources