Vinyl/furo-indoles and gold catalysis: new achievements and future perspectives for the synthesis of complex indole derivatives

The reactivity of vinyl/furo-indole derivatives with gold-activated π-systems is the subject of extensive investigation. In the presence of these electrophilic partners, the realised transformations allow for the construction of different and fascinating architectures via cycloaddition and cyclisation reactions often included in cascade processes. The reactions realised involving in these processes an external substituent at the indole moiety are the subject of the present minireview.