abstract |
Disclosed is a method for commercially producing a lactam compound with high yield and high quality. Specifically disclosed is a method for producing a lactam compound via an intermediate that is represented by formula (9). (In the formula, R1 represents a C1-6 alkyl group, a C2-6 alkenyl group, a C2-6 alkynyl group or a C3-6 cycloalkyl group.) |