Diastereoselective Construction of Bridged Azabicyclo[3.2.1]octane via Copper-Catalyzed Formal [4 + 3] Cycloaddition.

A novel copper-catalyzed formal diastereoselective [4 + 3] cycloaddition of 2-arylaziridines and 2-substituted cyclopentadiene was developed. This transformation provided an efficient protocol for the assembly of a highly strained bridged azabicyclo[3.2.

Inducing alternating magnetic fields for real-time non-contact fault localization within electric energy storage component arrays.

With the wide application of electric energy storage component arrays, such as battery cell arrays, capacitor arrays, and inductor arrays, their potential safety risks have gradually drawn the public attention. However, existing technologies cannot realize rapid, precise, and nondestructive localization of the faulty component within these large-scale arrays, especially for a component with an early stage short-circuit fault. To address this challenge, this paper proposes a magnetic field based method and realizes precise fault localization by inducing an alternating magnetic field from the target array, unlike previous research where a static magnetic field was induced.