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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1757692Generated: October 26, 2026

Bisphenol A → bisphenol-A methanol

https://huagongshe.com/reaction/1757692

Reaction equation

Participants

RoleNameHCIDCharge
ReactantBisphenol AHCID 6623—
Reactant2,3,5,6-Tetrabromo-4-[2-(4-hydroxyphenyl)propan-2-yl]phenolHCID 54240982—
SolventMethanolHCID 887—
Productbisphenol-A methanolHCID 131719113—

Reaction Steps

Briefly describing one aspect of the present invention, there is provided reduced methyl bromide methods for making high yield, high quality tetrabromobisphenol-A using methanol solvents including dissolving bisphenol-A in a methanol solvent to form a bisphenol-A methanol solution, adding bromine to the bisphenol-A methanol solution to brominate bisphenol-A and form tetrabromobisphenol-A and hydrogen bromide, exposing the bisphenol-A methanol solution to an amount of a hydrogen peroxide agent to reduce the amount of methyl bromide co-product resulting from the bromination of bisphenol-A in methanol by reducing the amount of hydrogen bromide co-product available to reach with the methanol, and collecting the resulting tetrabromobisphenol-A product thus formed after the bromination is substantially complete.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05446212
Source datasetuspto-grants-1995_08
ORD IDord-8198559d3ad543bcba51591e89fd8178
Source noteuspto-grants-1995_08