Decarboxylation Coupling Electrocatalysis Method for Catalyzing Aromatic Trimethyl Ammonium Salt and A-Nickel Ketonate

A decarboxylation coupling electrocatalysis method for catalyzing an aromatic trimethyl ammonium salt and α-nickel ketonate, comprising the following steps:

• step 1, adding aryl-ammonium trifluoromethyl sulfonate (1), α-keto acid (2), and sodium acetate in a molar ratio of 1:2:2 into a reaction bottle in a nitrogen atmosphere, adding an electrolyte n-Bu4NBF4, and then adding a mixed solution of acetonitrile and N,N-dimethylformamide to obtain a resulting mixture, wherein a volume ratio of the acetonitrile to the N,N-dimethylformamide is 1:4;
• step 2, stirring the resulting mixture in step 1 to dissolve the resulting mixture, inserting two electrodes, using a graphite electrode as a positive electrode and a nickel foam electrode as a negative electrode, applying a constant voltage direct current of 12 mA for a reaction, wherein a reaction temperature is 50° C. and a power-on time is 6 h, adding water for stirring after the reaction, and conducting an extraction, a drying, and a purification to obtain an aromatic ketone compound (3);
• and
• step 3, using a preparation formula as follows:
• wherein R1 is an aromatic group, and R2 is an aromatic group or an aliphatic group.