Palladium‐Catalyzed Novel C(formyl)‐C(aryl)/C(aryl)‐N(amine) Coupling Sequence Between 2‐(Methylamino)nicotinaldehyde and 3‐Bromo‐2‐chlorothiophene: An Efficient Construction of 4‐Pyridone Fused Hybrid Scaffolds

Palladium(0)-catalyzed aryne annulation: a powerful strategy for the synthesis of thio-bridged compounds

A method for the construction of various thio-bridged compounds is developed using readily available o-(trimethylsilyl)aryl triflates as a source of aryne precursor, catalyzed by simple Pd(dba)₂/dppe complex. This operationally simple and modular protocol allows thio-bridged compound via C(sp²)-C(sp²) and C(sp²)-C(sp³) bond formation in promising yields with a broad substrate scope. The key part is in situ generation of an aryne from o-(trimethylsilyl)aryl triflates and their subsequent intermolecular annulation.