Patent ID: 6350883
Filing Date: 2002-02-26
Classification: C07D

Abstract:
A method for preparing lactam represented by the following formula (I): wherein R is C2-10 alkylene which may be optionally substituted with C1-6 alkyl or phenyl; Râ€² is a hydrogen atom, C1-6 alkyl, C1-6 hydroxyalkyl or phenyl; which comprises an amination reaction using crystalline aluminosilicate zeolites as catalysts under the condition of gas phase in the presence of (a) lactone, (b) amine and/or ammonia and (c) water; wherein said lactone is represented by the following formula (II): wherein the definition of R has the same meaning as described above; wherein said amine is a primary, secondary or tertiary acyclic amine substituted with one to three C1-6 alkyl, C1-6 hydroxyalkyl or phenyl.