Method for synthesizing intermediate methyl pyridone of pesticide imidacloprid

The invention discloses a method for synthesizing intermediate methyl pyridine of pesticide imidacloprid, relating to the technical field of compound synthesizing techniques. The method comprises the following steps: taking N, N-dimethyl acrylonitrile as raw material to synthesize 1-cyano-2(N, N-dim...

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Bibliographic Details
Main Authors JING XIAOBI, WU LINTAO, BI XIAOXIN, WANG QING
Format Patent
LanguageChinese
English
Published 20.01.2010
Subjects
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Summary:The invention discloses a method for synthesizing intermediate methyl pyridine of pesticide imidacloprid, relating to the technical field of compound synthesizing techniques. The method comprises the following steps: taking N, N-dimethyl acrylonitrile as raw material to synthesize 1-cyano-2(N, N-dimethyl amidocyanogen) and 3-methylcyclobutane; carrying out acidolysis to obtain 2-methyl 4 cyano-butyraldehyde; hydrolyzing cyanogen to prepare methyl pyridone in a buffer solution formed by acetate acid and ammonium acetate; chlorine-dissolving the methyl pyridone in benzene chloride to form methyl pyridone chlorobenzene solution; and if a subsequent reaction is needed, reducing pressure to evaporate benzene chloride obtain methyl pyridine. The method has remarkable advantages that vinyl cyanide which is a easily obtained chemical material is adopted as the raw material, and the synthesis reaction time of cyclobutyl compound is short; the mixture solution of acetate acid and ammonium acetate is used to hydrolyze c
Bibliography:Application Number: CN20091182062