Process for production of halogen-substituted benzenedimethanol

Details Process for production of halogen-substituted benzenedimethanol Process for production of halogen-substituted benzenedimethanol

2011-07-05

2011-07-05

Witherspoon, Sikarl A (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C568S814000

Reexamination Certificate

active

07973201

ABSTRACT:
A process for the production of a halogen-substituted benzenedimethanol represented by the formula (2):wherein X1, X2, X3and X4are the same or different and independently represent a hydrogen atom or a halogen atom, provided that at least one of X1, X2, X3and X4represents a halogen atom, comprising reacting a halogen-substituted terephthalic acid diester represented by the formula (1):wherein X1, X2, X3and X4are the same meanings as defined above and R1and R2are 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.

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Edited by The Chemical Society of Japan, ‘Shin Jikken Kagaku Koza 15 Sanka to Kangen II’ Maruzen Co., Ltd., (Feb. 20, 1977), pp. 216.
Shingeru Oae, Seizo Tamagaki, ‘Gosei Kagaku Series Kangen Hanno’, Maruzen Co., Ltd., (Jan. 25, 1975), pp. 64.
Edited by kagaku Daijiten Henshu linkai, ‘Kagaku Dajiten 5’, Kyoritsu Shuppan Co., Ltd., (Aug. 15, 1989), pp. 62.

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