This review comprehensively summarizes the dichalcogenative functionalization of unsaturated compounds over the past decade. The scopes, limitations and detailed reaction mechanisms are also discussed.
A highly efficient catalyst-free synthetic method toward [1]benzothiophene[3,2-b][1]benzothiophenes (BTBTs) through domino reaction has been developed. This study has laid the foundation for the development of new BTBT materials such as 3Cn-BTBT.
Alkynes are important in organic synthesis. This review mainly focuses on the recent advances (2013–2023) on alkynes with C–S bond formation, based on more than 30 kinds of sulfur reagents.
This work presents an efficient PIFA-mediated cyclization for synthesizing C3-arylated benzo[b]thiophenes, which are crucial in medicinal chemistry, while bypassing traditional sulfoxide intermediate formation via a novel thionium complex pathway.
This review summarizes the recent advances in cyclization reactions involving pyridinium 1,n-zwitterions (n = 4 and 5) and highlights the applications of pyridinium 1,n-zwitterions (n = 4 and 5) in the efficient construction of heterocycles.