A Sm(II)-Mediated Cascade Approach to Dibenzoindolo[3,2‑<i>b</i>]carbazoles: Synthesis and Evaluation

Previously unstudied dibenzoindolo­[3,2-b]­carbazoles have been prepared by two-directional, phase tag-assisted synthesis utilizing a connective-Pummerer cyclization and a SmI2-mediated tag cleavage–cyclization cascade. The use of a phase tag allows us to exploit unstable intermediates that would otherwise need to be avoided. The novel materials were characterized by X-ray, cyclic voltammetry, UV–vis spectroscopy, TGA, and DSC. Preliminary studies on the performance of OFET devices are also described.