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Hace 5 días · Coupling and Cohesion are two key concepts in software engineering that are used to measure the quality of a software system’s design. Both coupling and cohesion are important factors in determining the maintainability, scalability, and reliability of a software system.
Hace 1 día · The selective coupling of benzylamine as the target reactant is used to assess the photocatalytic activity of TpDPP-Py COFs, showing high photocatalytic conversion of 99% and selectivity of 98% in ...
Hace 2 días · Phase-amplitude coupling, a type of cross-frequency coupling, may provide additional mechanistic insight. Objective To determine how the phase of prefrontal cortex delta (1-3 Hz) oscillatory activity mediates the amplitude of motor cortex beta (13-20 Hz) oscillations in individual's early post-stroke. Methods
Hace 1 día · Cross-electrophile coupling (XEC) between aryl halides and alkyl halides is a streamlined approach for C(sp2)−C(sp3) bond construction, which is highly valuable in medicinal chemistry. Based on a key NiII aryl amido intermediate, we developed a highly selective and scalable Ni-catalyzed electrochemical XEC reaction between (hetero)aryl halides and primary and secondary alkyl halides.
Hace 2 días · The experimentally determined nuclear quadrupole coupling constants (NQCC) for molecules and molecular complexes, denoted as χ, are proportional to the electric field gradient at the quadrupolar nucleus, making χ a reflection of the local electron distribution and an indicator of the nature of the chemical bond involving the quadrupolar nucleus.
Hace 2 días · For example, using organic solvents significantly diminishes the sustainability of a coupling process. In terms of the total environmental footprint, performing palladium-catalysis in water is 40–50% better than nickel-catalysis in an organic solvent. Moreover, palladium often requires significantly lower catalyst loadings than nickel.
Hace 2 días · The development of a catalytic method for stereogenic carbon center formation holds immense significance in organic synthesis. Transition-metal-catalyzed cross-coupling reaction has been regarded as a straightforward and efficient tool for stereoselectively forging C–C bond. Nevertheless, the creation of acyclic all-carbon quaternary-containing vicinal stereocenters remains notoriously ...
