Method for producing alkylated aromatic amide derivative

A method for producing an aromatic amide derivative represented by formula (4) is provided, the method including a step of reacting an aromatic amide derivative represented by formula (1) with a haloalkyl compound represented by formula (3) in the presence of a base and a metal or metal salt. In the formulae, X and Y represent a hydrogen atom, a halogen atom, or the like, A represents a hydrogen atom, an alkyl group, a group represented by formula (2) or the like, G1 and G2 represent an oxygen atom or the like, Q1 represents a phenyl group or the like, R1 represents a hydrogen atom, an alkyl group or the like, Z1 represents a haloalkyl group or the like, Xa represents a iodone atom or the like, m is 1 to 4, n1 is 1 to 5 and n2 is 1 to 4.