Study On The Photocatalytic Reaction Of Polyacid-quinoline Cocrystal

Nitrogenous heterocyclic compounds are widely known because they are widely present in many small molecules associated with drugs,such as antitumor drugs,cardiovascular and cerebrovascular drugs.The Minisci reaction is commonly used to introduce other groups directly into N-heterocycles due to its excellent selectivity.However,most previously reported protocols use homogeneous catalysts,which cannot be recovered.Based on the above shortcomings,this thesis prepared polyoxometalate and developed a Minisci reaction strategy with recyclable catalysts.In addition,in subsequent experiments,this thesis tried to catalyze different reactions to broaden its application range.In the first and second parts of this paper,a novel one-dimensional chained polyoxometalate-based photocatalyst was formed by H3PW12O40,4-methylquinoline and DMSO.In addition,it was found that the synthesized photocatalyst has extremely high stability and reusability,and shows excellent performance in visible light-mediated Minisci reactions.Mechanistic studies have shown that C-H functionalization involves the W(Ⅵ)-W(Ⅴ)catalytic cycle.The third part of this paper broadens the scope of application of the new catalyst by using co-crystallisation catalysts to achieve photocatalytic degradation of organic dyes and desulphurisation of crude oil.