designed for the preparation of gem-difluoro-bisarylic derivatives. It starts from easily accessible and reactive gem-difluoro-propargylic intermediates and elaborates the aromatic rings by a Diels–Alder-aromatization sequence. Heterocyclic systems can be also obtained by 1,3 dipolar cycloadditions, affording mixed aromatic/heteroaromatic derivatives with CF2 as a linker. Since this motif is a bioisostere