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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1763740Generated: October 25, 2026

Hydrochloric Acid → O-Methyltyrosine

https://huagongshe.com/reaction/1763740

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantSodium HydroxideHCID 14798—
Reactant5-(4-Methoxy-benzyl)-hydantoinHCID 95727—
SolventWaterHCID 962—
ProductO-MethyltyrosineHCID 97118—

Reaction Steps

A solution of 148 g. of 5-p-methoxybenzyl hydantoin and 188 g. of sodium hydroxide in one liter of water is heated at reflux for 25 hours. The solution is cooled and made acid to pH 1 with concentrated hydrochloric acid. The formed solid is separated by filtration, washed with water and dried to give the above named compound, mp. 255° C. dec.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04111923
Source datasetuspto-grants-1978_09
ORD IDord-ad2f9784c50e47a380a258bb024a23b0
Source noteuspto-grants-1978_09