申请人:Daicel Chemical Industries, Ltd.
公开号:EP2301918A1
公开(公告)日:2011-03-30
A process produces an amide or lactam by subjecting an oxime compound to rearrangement in a solvent in the presence of: at least one catalyst selected from the group consisting of an aromatic compound (A1) containing a leaving group bound to a carbon atom constituting the aromatic ring, the aromatic ring including, as a constitutive atom thereof, a heteroatom or including, as a constitutive atom thereof, a carbon atom bound to an electron-withdrawing group, and a compound (A2) containing a structure of Formula (1): -G-LA (1) wherein G represents P, N, S, B or Si atom; and LA represents a leaving group, wherein G is bound to one or more atoms or groups in addition to LA; and a co-catalyst including a halogen-containing organic acid, to give the corresponding amide or lactam, wherein, when the aromatic compound (A1) alone is used as the catalyst, the solvent is at least one solvent selected typically from hydrocarbon solvents. The production process can yield amides or lactams simply in high yields without causing large amounts of by-products such as ammonium sulfate.
一种生产酰胺或内酰胺的工艺,其方法是使肟化合物在以下物质存在下在溶剂中进行重排:至少一种催化剂,该催化剂选自由以下组成的组芳香化合物(A1),该芳香化合物含有与构成芳香环的碳原子结合的离去基团,芳香环包括作为其构成原子的杂原子或包括作为其构成原子的与抽电子基团结合的碳原子,以及含有式(1)结构的化合物(A2):-G-LA(1),其中 G 代表 P、N、S、B 或 Si 原子;LA 代表离去基团,其中 G 除 LA 外还与一个或多个原子或基团结合;以及助催化剂,包括含卤素的有机酸,以得到相应的酰胺或内酰胺,其中,当单独使用芳香族化合物(A1)作为催化剂时,溶剂为通常选自烃溶剂的至少一种溶剂。该生产工艺可简单高产地得到酰胺或内酰胺,而不会产生大量副产物,如硫酸铵。