Lu, Jingzhi; Khetrapal, Navneet S.; Johnson, Jacob A.; Zeng, Xiao Cheng; Zhang, Jian published their research in Journal of the American Chemical Society on December 14 ,2016. The article was titled 《”π-Hole-π” interaction promoted photocatalytic hydrodefluorination via inner-sphere electron transfer》.Quality Control of Ethyl 2,3,4,5,6-pentafluorobenzoate The article contains the following contents:
We describe a metal-free, photocatalytic hydrodefluorination (HDF) of polyfluoroarenes (FA) using pyrene-based photocatalysts (Py). The weak “”π-hole-π”” interaction between Py and FA promotes the electron transfer against unfavorable energetics (ΔGET up to 0.63 eV) and initiates the subsequent HDF. The steric hindrance of Py and FA largely dictates the HDF reaction rate, pointing to an inner-sphere electron transfer pathway. This work highlights the importance of the size and shape of the photocatalyst and the substrate in controlling the electron transfer mechanism and rates as well as the overall photocatalytic processes. The results came from multiple reactions, including the reaction of Ethyl 2,3,4,5,6-pentafluorobenzoate(cas: 4522-93-4Quality Control of Ethyl 2,3,4,5,6-pentafluorobenzoate)
Ethyl 2,3,4,5,6-pentafluorobenzoate(cas: 4522-93-4) belongs to esters. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. Quality Control of Ethyl 2,3,4,5,6-pentafluorobenzoate
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics