| abstract |
The invention relates to the preparation of unsaturated fatty acid, and provides a preparation method of methyl pentenoate, which comprises the following steps: adding pentenenitrile, methanol and water into concentrated sulfuric acid to obtain a mixed uniform solution, and reacting the concentrated sulfuric acid with the mixed uniform solution to obtain a crude product of methyl pentenoate. The invention is suitable for various isomers of pentenenitrile, and has the advantages of few raw material types, simple process, high selectivity, low cost and yield of more than 90 percent. |