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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 898094Generated: October 30, 2026

Malonic Acid → (r)-3-(p-Bromophenyl)-beta-alanine

https://huagongshe.com/reaction/898094

Reaction equation

Participants

RoleNameHCIDCharge
ReactantMalonic AcidHCID 867—
Reactant4-BromobenzaldehydeHCID 70741—
ReactantAmmonium AcetateHCID 517165—
SolventWater ethanolHCID 19096565—
Product(r)-3-(p-Bromophenyl)-beta-alanineHCID 72405463%

Reaction Conditions

Temperature80 °C

Reaction Steps

p-Bromo-benzaldehyde (10.0 g, 54 mmol) was mixed with 100 ml of ethanol/water (95/5), 8.3 g of ammonium acetate (108 mmol), and 11.2 g of malonic acid (108 mmol), heated under reflux at 80° C. with stirring for 17 hours, filtered under heating and dried under reduced pressure to give 8.3 g of p-bromo-β-phenylalanine crystals at a yield of 62.8%.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07351571B2
Source datasetuspto-grants-2008_04
ORD IDord-50675645573b4d7ea63ad236cf72995d
Source noteuspto-grants-2008_04