▎ 摘　　要

NOVELTY - Phosphine compound, prepared by adding phosphorus trichloride, sublimed sulfur, aluminum trichloride, reactant, and tetrahydrofuran into a reaction kettle, stirring at 0-3 degrees C for 20-30 minutes at a speed of 200-300 revolutions/minute, adding the catalyst, heating to 70-80 degrees C, and carrying out the reflux reaction for 3-8 hours, is claimed. USE - Used as phosphine compound. ADVANTAGE - The compound has good reduction effect and reductive carrier, is easy to recycle and the recovered catalyst can be treated with potassium borohydride and used again, which greatly reduces the preparation cost and reduces the waste of resources.