Method for photocatalytic synthesis of indole benzyl sulfone compound

The invention belongs to the field of organic chemical synthesis, and relates to a method for photocatalytic synthesis of an indole benzyl sulfone compound. The method comprises the following steps: mixing aryl halide 1 with a sodium sulfinate compound 2, a photosensitizer, alkali, 2, 6-dimethyl-3, 5-diethyl ester-1, 4-dihydropyridine and a solvent, placing the mixture in a reactor, and carrying out a photoreaction under the protection of inert gas and the irradiation of an LED lamp to obtain an indole benzyl sulfone compound 3. Compared with the prior art, the photocatalytic synthesis method disclosed by the invention is green and environment-friendly, does not need a high-temperature condition, is mild in reaction condition, does not need to use a strong oxidant, is simple and convenient to operate, is high in yield and is more green and safer. 本发明属于有机化学合成领域，涉及一种光催化合成吲哚苄基砜类化合物的方法。将芳基卤化物1与亚磺酸钠类化合物2、光敏剂、碱、2,6-二甲基-3,5-二乙酯基-1,4-二氢吡啶、溶剂混合置于反应器内，在惰性气体保护、LED灯照射下进行光反应，即得吲哚苄基砜类化合物3。与现有技术对比，本发明的光催化合成方法绿色环保，无需高温条件，反应条