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.
揭示了一种工业高效地以低成本生产具有8至15个碳原子的内酰胺化合物的方法,通过使环氧
肟化合物的重排反应在不产生大量副产物如
硫酸铵的情况下进行。
【解决手段】揭示了一种生产内酰胺化合物的方法,包括在非极性溶剂B中在芳香化合物A存在下重排环氧
肟化合物的步骤,以得到内酰胺化合物,其中芳香化合物A具有与构成其芳香环的碳原子结合的离去基团,并且包含作为构成芳香环的原子,一个杂原子,或者与带有电子吸引基团的碳原子结合,环氧
肟化合物由以下式(1)表示:其中“m”表示一个整数,范围为7至14,内酰胺化合物由以下式(2)表示:其中“m”如上所定义。