The invention provides a preparation method for alpha-iodo-beta-arylketo-substituted
sulfone compounds. The preparation method comprises the following steps: taking olefin nitrine,
sulfohydrazide and
potassium iodide as starting raw materials; and in an
organic solvent, taking tert-butyl hydroperoxide as an
oxidizing agent, and reacting to generate the alpha-iodo-beta-arylketo-substituted
sulfone compounds, wherein a
molar ratio of olefin nitrine to
sulfohydrazide to
potassium iodide to tert-butyl hydroperoxide is 1:2:2:2, the
reaction temperature is the
room temperature, and the reaction time is 2-4 hours. The preparation method provided by the invention is reasonable in design, adopts easily available raw materials, does not need a
metal catalyst, is gentle in reaction condition, is free of high-temperature flux, is safe and convenient and is high in yield, and the yield of most products is 70% or higher, so that the preparation method is a method, which is simple to operate, quick, gentle and diversified, for constructing the alpha-iodo-beta-arylketo-substituted
sulfone compounds, wherein the three starting raw materials can be obtained through a one-step process, and the reaction raw materials are cheap and easily available; and the formulas of the alpha-iodo-beta-arylketo-substituted sulfone compounds are as shown in the specification.