A method for producing a polymerizable compound represented by a formula comprising: a step that reacts a compound represented by a formula with 2,5-dihydroxybenzaldehyde in an organic solvent in the presence of a base to obtain a reaction mixture including a compound represented by a formula; and a step that adds a compound represented by a formula and an acidic aqueous solution to the reaction mixture obtained by the step to effect a reaction, wherein A represents a hydrogen atom, a methyl group, or a chlorine atom, L represents a halogen atom or an organic sulfonyloxy group, and n represents an integer from 1 to 20, wherein A and n are the same as defined above, wherein X represents an oxygen atom, a sulfur atom, -C(R 1)(R 2)-, or -N-R 1 -, wherein each of R 1 and R 2 independently represents a hydrogen atom, or a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, R represents a hydrogen atom, or a substituted or unsubstituted organic group having 1 to 20 carbon atoms, and each of R X represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, a cyano group, a nitro group, a fluoroalkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, an alkylthio group having 1 to 6 carbon atoms, a monosubstituted amino group, a disubstituted amino group, or -C(=O)-O-R 3, wherein R 3 is the same as defined above in connection with R 1 and R 2, provided that R X are identical to or different from each other, and an arbitrary C-R X that forms the ring is optionally substituted with a nitrogen atom, and wherein A, R, R X, X, and n are the same as defined above. a step that reacts a compound represented by a formula with 2,5-dihydroxybenzaldehyde in an organic solvent in the presence of a base to obtain a reaction mixture including a compound represented by a formula; and a step that adds a compound represented by a formula and an acidic aqueous solution to the reaction mixture obtained by the step to effect a reaction, wherein A represents a hydrogen atom, a methyl group, or a chlorine atom, L represents a halogen atom or an organic sulfonyloxy group, and n represents an integer from 1 to 20, wherein A and n are the same as defined above, wherein X represents an oxygen atom, a sulfur atom, -C(R 1)(R 2)-, or -N-R 1 -, wherein each of R 1 and R 2 independently represents a hydrogen atom, or a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, R represents a hydrogen atom, or a substituted or unsubstituted organic group having 1 to 20 carbon atoms, and each of R X represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, a cyano group, a nitro group, a fluoroalkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, an alkylthio group having 1 to 6 carbon atoms, a monosubstituted amino group, a disubstituted amino group, or -C(=O)-O-R 3, wherein R 3 is the same as defined above in connection with R 1 and R 2, provided that R X are identical to or different from each other, and an arbitrary C-R X that forms the ring is optionally substituted with a nitrogen atom, and wherein A, R, R X, X, and n are the same as defined above. wherein X represents an oxygen atom, a sulfur atom, -C(R 1)(R 2)-, or -N-R 1 -, wherein each of R 1 and R 2 independently represents a hydrogen atom, or a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, R represents a hydrogen atom, or a substituted or unsubstituted organic group having 1 to 20 carbon atoms, and each of R X represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, a cyano group, a nitro group, a fluoroalkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, an alkylthio group having 1 to 6 carbon atoms, a monosubstituted amino group, a disubstituted amino group, or -C(=O)-O-R 3, wherein R 3 is the same as defined above in connection with R 1 and R 2, provided that R X are identical to or different from each other, and an arbitrary C-R X that forms the ring is optionally substituted with a nitrogen atom, and wherein A, R, R X, X, and n are the same as defined above.