Xinjuan Wang

1. Introduction In recent years, compounds containing N-heterocycles are found to have wide application in pesticidal and medicinal fields [1,2,3,4,5]. As an important N-heterocycle, pyridine-based derivatives have drawn extensive interest owing to their diversified bioactivities, including insecticidal [6,7,8], fungicidal [9], herbicidal [10], antibacterial [11], and anticancer properties [12,13].

• , , & ( ). Spatial effects of industrial synergistic agglomeration and regional green development efficiency: Evidence from China . Energy Economics, , 106156. https://doi.org/10.1016/j.eneco.2022.106156 • , , , , , , & ( ). Environmental effects of financial agglomeration under dual correlations of industry and space: Evidence from 286 prefecture-level cities in China . Environmental Impact Assessment Review, , 106978. https://doi.org/10.1016/j.eiar.2022.106978 • , , & ( ).

Ru-catalyzed directing group assisted C−H functionalization of arenes remains one of the powerful tools for site selective organic synthesis. Previous thermos versions normally require high temperature, rendering low functional group tolerance. With the emergence of the photoredox chemistry, visible light mediated mild Ru-catalyzed directed C−H activation, especially using [RuCl2(p-cymene)]2 as catalyst, have recently been investigated.