CuSO ₄ nanoparticles loaded onto poly (toluenesulfonic acid‐formaldehyde)/polyethyleneimine composites: An efficient retrievable catalyst for A ₃ /decarboxylative A ₃ reactions

Using polymeric composite incorporated transition metal nanoparticles to promote various organic reactions has been found as one of the most powerful strategies in organic synthesis. In this paper, CuSO 4 nanoparticles (CuSO 4 NPs) anchored on the surface of polymeric composites comprising of water‐insoluble acidic poly (toluenesulfonic acid‐formaldehyde) (PTSAF) and water‐soluble basic polyethyleneimine (PEI) to form the desired...