Patent ID: 7973201

Claim:
A process for the production of a halogen-substituted benzenedimethanol represented by the formula (2): wherein X 1 , X 2 , X 3 and X 4 are the same or different and independently represent a hydrogen atom or a halogen atom, provided that at least one of X 1 , X 2 , X 3 and X 4 represents a halogen atom, comprising reacting a halogen-substituted terephthalic acid diester represented by the formula (1): wherein X 1 , X 2 , X 3 and X 4 are the same meanings as defined above and R 1 and R 2 are the same or different and independently represent an unsubstituted or substituted alkyl group, a metal borohydride compound and an acid in the presence of an ether solvent, wherein the amount of the acid is 0.2 to 3 moles per 1 mole of the metal borohydride compound based on protons, and the reaction is conducted under the condition where the liquid phase of the reaction mixture is a single layer.