Acylphosphine oxide compounds and preparation methods thereof

A method for preparing an acylphosphine oxide compound, comprising:

• reacting compound B with compound C in the presence of organic base and organic solvent in a reaction system to obtain the acylphosphine oxide compound,
• and the method further comprises:
• adding a Lewis acid as a catalyst into the reaction system comprising the compound B and the compound C;
• wherein
• a molar ratio of the compound B, the compound C, the organic base and the Lewis acid is 1:1-2:1-5:0.01-2;
• a chemical structural formula of the compound B is illustrated below:
• a chemical structural formula of the compound C is illustrated below:
• and
• a chemical structural formula of the acylphosphine oxide compound is illustrated below:
• wherein, R1 and R2 are independently selected from the group consisting of hydrogen, C1-C6 methoxy, methylthio, dimethylamino, chloroformyl, phenyl, benzoyl, (4-alkyl, dimethylamine) phenyl, α-naphthyl, β-naphthyl and (9-ethyl-9H-carbazole)-3-yl;
• n is the number of R1 substituent(s) in relevant benzene ring, where n is 1, 2 or 3;
• and
• m is the number of R2 substituent(s) in relevant benzene ring, where m is 1, 2 or 3.