The invention relates to a CDK
drug intermediate 3-(3-bromophenyl)
piperidine-2, 6-
diketone as well as a synthesis method and application thereof, and belongs to the technical field of
medicine synthesis. The synthetic method of the CDK
drug intermediate 3-(3-bromophenyl)
piperidine-2, 6-
diketone provided by the invention comprises the following steps: (1) mixing 3-bromobenzyl
cyanide and
acrylonitrile, slowly dropwise adding benzyltrimethylammonium
hydroxide, and refluxing to obtain an intermediate 2-(3-bromophenyl) glutaronitrile; and (2) dissolving the intermediate 2-(3-bromophenyl) glutaronitrile in an
acetic acid-concentrated
sulfuric acid solution, and carrying out
hydrolysis cyclization to obtain the target compound 3-(3-bromophenyl)
piperidine-2, 6-
diketone. According to the invention, 3-bromophenylacetonitrile is used as an initial
raw material, and a target product is prepared only through two simple steps. The method has the advantages of easily available raw materials, short reaction
route, simple post-treatment and the like, and is suitable for industrial preparation and production.