| abstract |
The invention relates to the technical field of a synthesis method of quinoxaline-2 (1H) -ketone compounds, in particular to a synthesis method and application of a photocatalysis C-3 site alkyl substituted quinoxaline-2 (1H) -ketone compound. Quinoxaline-2 (1H) -ketone and derivatives thereof and substituted sulfonium salt are taken as raw materials, an organic photosensitizer is taken as a photocatalyst, at least one carbonate or nitrogen-containing organic alkali is taken as alkali under the conditions of inert gas environment and normal temperature, and near blue light is adopted to irradiate reaction liquid to synthesize the quinoxaline-2 (1H) -ketone compound substituted by C-3 alkyl. The synthetic method has simple preparation process and device, takes near blue light as energy, has mild reaction conditions, and is green and environment-friendly; as the synthesis method is the direct alkylation of the C-3 position, complex pretreatment is not needed, and the environment-friendly concept of green chemistry and atom economy is met. |