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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 648272Generated: October 30, 2026

Aniline → HCID 20482846, compound

https://huagongshe.com/reaction/648272

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAnilineHCID 6115—
ReactantHexamethylphosphoramideHCID 12679—
ReactantEthyl 2-bromo-3-hydroxybutanoateHCID 12541051—
SolventDiethyl EtherHCID 3283—
ProductHCID 20482846HCID 20482846—

Reaction Steps

To a mixture of ethyl 2-bromo-3-hydroxybutanoate (10 g) and 15 ml of HMPT is added 13.2 g of aniline. The reaction is stirred at RT for 3 days and then taken up in ether followed by washing with dilute sulfuric acid, pH 3, and water. The ether phase is dried over magnesium sulfate and evaporated to yield ethyl 2-phenylamino-3-hydroxybutanoate, which is saponified using 1.6 g of sodium hydoxide, 40 ml of methanol and 20 ml of water with stirring overnight at RT. The acid 2-phenylamino-3-hydroxybutanoic acid (3.0 g) is reacted with m-phenoxybenzyl bromide (3.4 g) in HMPT (20 ml) and potassium carbonate (2.12 g) at 35° for a few hours and worked up using ether/water to yield the m-phenoxybenzyl ester of 2-phenylamino-3-hydroxybutanoic acid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04411912
Source datasetuspto-grants-1983_10
ORD IDord-fbb38a915a2d4809b58f56c5840d665f
Source noteuspto-grants-1983_10