HFIP‐Mediated Dual C(Ar)‐Alkylation Process Towards the Regioselective Synthesis of Triarylmethanes (TRAMs)

The distinct roles of different chemical species are essential for the discovery of novel chemical transformations in organic synthesis. Here, we have designed a potential strategy for the synthesis of triarylmethanes (TRAMs) using the dual C(aryl)‐alkylation process. This protocol was influenced by 1,1,1,3,3,3‐hexafluoroisopropanol (HFIP) as a pivotal reagent and proceeds through the selective para C−H functionalization method. The described approach has been proven to be highly efficient in terms of substrate scope with excellent functional group tolerance and gram scale synthesis of the desired product with 90 % yield. The recyclability and reusability of HFIP has enhanced the feasibility of this protocol towards the sustainable synthesis of TRAMs. HFIP mediated dual C(aryl)‐alkylation approach is described for the synthesis of symmetrical as well as unsymmetrical triarylmethanes (TRAMs) in regioselective manner. The process has been directed via the para−C−H functionalization strategies of aniline derivatives.