Synthetic method for N-substituent-3-aminoacrolein

The invention discloses a synthetic method for N-substituent-3-aminoacrolein. The method comprises the following steps: with secondary amine and 3-chloroallyl alcohol as raw materials, and active manganese dioxide as a catalyst, carrying out introducing into an air environment, then carrying out a reaction at 0.5 to 2.5 MPa and 40 to 90 DEG C for 6 to 14 h, and after completion of the reaction, postprocessing a reaction solution so as to obtain an N-substituent-3-aminoacrolein derivative, wherein the yield is 68% to 97%. Compared with a conventional method for synthesizing the N-substituent-3-aminoacrolein, the method provided by the invention has the advantages of low toxicity, low pollution, simple operation, etc.