84445-92-1Relevant articles and documents
Synthesis method of key raw material 2-chloro-6-methylaniline of dasatinib
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Paragraph 0016; 0033; 0035; 0038; 0040, (2021/04/21)
The invention discloses a synthetic method of a key raw material 2-chloro-6-methylaniline of dasatinib. The method comprises the following steps: firstly, protecting a 1-site amino group of 2-nitro-6-methylaniline, then reducing a 2-site nitro group of 2-nitro-6-methylaniline into an amino group, then carrying out diazotization reaction, carrying out chlorine substitution on the 2-site amino group by using cuprous chloride, and finally, carrying out acidolysis to remove a 1-site amino protecting group to obtain 2-chlorine-6-methylaniline. The method has the advantages of cheap and easily available raw materials, easily controllable reaction, simple operation steps, simple post-treatment, recyclable solvents, small pollution, and suitableness for large-scale production of generative enterprises.