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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 411876Generated: October 30, 2026

Methanol → O-benzyl-L-tyrosine

https://huagongshe.com/reaction/411876

Reaction equation

Participants

RoleNameHCIDCharge
ReactantMethanolHCID 887—
ReactantL-TyrosineHCID 6057—
ReactantBenzyl ChlorideHCID 7503—
CatalystCopper SulfateHCID 24462—
SolventSodium HydroxideHCID 14798—
ProductO-benzyl-L-tyrosineHCID 725701—

Reaction Conditions

Temperature60 °C

Reaction Steps

To a solution of L-tyrosine of the formula (10) (250 g) in 2N NaOH solution (552 ml), copper sulphate solution (172 g of CuSO4 in 600 ml of water) was added and heated at 60° C. for 2 h. The reaction mixture was cooled to room temperature and methanol (2.5 L) and 2N NaOH (83 ml) was added and then benzyl chloride (15 ml) was added drop wise. The reaction mass was allowed to warm to room temperature. The precipitate was filtered and washed to give the title compound as white to off-white solid (260 g, 70%) (Ref: Bodansky & Bodansky pp50).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06559335B2
Source datasetuspto-grants-2003_05
ORD IDord-cef605ecb60348f2a0d855cf2b49e6f3
Source noteuspto-grants-2003_05