發展交叉脫氫偶合反應並用於新型小分子電洞傳輸材料與非富勒烯電子受體之簡易合成(1/2)

Direct C-H bond functionalization has been shooting the lights out in synthetic organic chemistry since past two decades. Among various C-H bond activation strategies, coupling of two un-activated reactants via direct C-H/C-H reactions, namely cross-dehydrogenative coupling (CDC), is by far the most atom-economical and step-saving pathway to facilely construct carbon-carbon bonds. However, application of CDC in the efficient synthesis of functional pi-conjugated materials is rare. Therefore, we propose to develop a series of target-oriented C(sp2)-H/C(sp2)-H cross-dehydrogenative coupling reactions using inexpensive [Cu]-, [Fe]-, [Co]-, or [Mn]-based catalysts. Furthermore, transition-metal-free or in-water CDC type reactions will be also examined. Under optimum reaction conditions, we envisage to synthesize new oligoheteroarenes for use as effective hole-transporting materials (HTMs) or non-fullerene acceptors (NFAs) that are usually required in the device fabrication of high-performance perovskite solar cells (PSCs) and organic solar cells (OSCs).