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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 903827Generated: October 26, 2026

Phenolphthalein → (-)-alpha-Amino-4-hydroxy-3-(methoxymethyl)benzeneacetic acid methyl ester

https://huagongshe.com/reaction/903827

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPhenolphthaleinHCID 4764—
ReactantPotassium HydroxideHCID 14797—
Reactant(-)-alpha-Amino-4-hydroxy-3-(methoxymethyl)benzeneacetic acid methyl ester hydrochlorideHCID 70585116—
SolventMethanolHCID 887—
Product(-)-alpha-Amino-4-hydroxy-3-(methoxymethyl)benzeneacetic acid methyl esterHCID 53644499—

Reaction Steps

(-)-α-Amino-4-hydroxy-3-(methoxymethyl)benzeneacetic acid methyl ester hydrochloride is dissolved in a minimum amount of methanol. To this solution is added methanolic potassium hydroxide until a basic reaction to phenolphthalein is observed. The potassium chloride which precipitates is removed and the solvent is removed under vacuum to give a quantitative yield of the title compound.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04229363
Source datasetuspto-grants-1980_10
ORD IDord-677af14c299d4a7082676fdb10894b4a
Source noteuspto-grants-1980_10