To provide a new production method of a 1,4-hydroquinone derivative with a condensed 1,3-dithiol ring.

The production method of compounds (III) or (V) represented by general formulae (III) or (V), respectively, comprises causing a compound represented by general formula (I) to react with compounds (II) or (IV) represented by general formulae (II) or (IV), respectively, under a non-acidic condition. In the formulae, R1-R5 are each a hydrogen atom or a specific substituent group.