New synthesis method of photoinitiator 2,4,6-teimethyl benzoyl-diphenyl phosphine oxide

The invention discloses a new synthesis method of photoinitiator 2,4,6-teimethyl benzoyl-diphenyl phosphine oxide, and belongs to the technical field of the synthesis of the photoinitiator. The methodcomprises the following steps: adding diphenylethoxy phosphine and 2,4,6-trimethyl benzoyl in a reaction vessel at a vacuum condition of -0.098MPa, beginning reaction by controlling temperature at 40DEG C, rising temperature for 10 DEG C at the interval of 20min in the reaction process until the temperature is raised to 90 DEG C, and then reacting at constant temperature of 90 DEG C for 4-8h, and adding 50% ethanol crystal after the reaction is finished, namely obtaining a target product. The method disclosed by the invention is simple in synthesis and post-treatment step, the solvent is unnecessary to use in the synthesis process, and the purity and yield of the synthesized product are high. 本发明公开了种光引发剂2,4,6-三甲基苯甲酰基-二苯基氧化膦的新合成方法，属于光引发剂的合成技术领域。该方法步骤为：在-0.098Mpa的真空条件下将二苯基乙氧基膦和2,4,6-三甲基苯甲酰氯加入反应容器，控温40℃开始反应，反应过程中每间隔