| 摘要 |
Disclosed is a method for industrially efficiently producing a lactam compound having 8 to 15 carbon atoms at low cost by allowing a rearrangement reaction of a cyclic oxime compound to proceed without causing large amounts of by-products such as ammonium sulfate. [Solving Means] Disclosed is a method for producing a lactam compound, which includes the step of rearranging a cyclic oxime compound in a nonpolar solvent B in the presence of an aromatic compound A to give the lactam compound, in which the aromatic compound A has a leaving group bonded to a carbon atom constituting its aromatic ring and contains, as an atom constituting the aromatic ring, a heteroatom, or a carbon atom bonded with an electron-withdrawing group, the cyclic oxime compound is represented by following Formula (1): wherein "m" denotes an integer of 7 to 14, and the lactam compound is represented by following Formula (2): wherein "m" is as defined above.
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