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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1389108Generated: November 1, 2026

Sulfuric Acid → HCID 20536468, compound

https://huagongshe.com/reaction/1389108

Reaction equation

Participants

RoleNameHCIDCharge
ReactantSulfuric AcidHCID 1118—
ReactantSodium AcetateHCID 517045—
ReactantHCID 20536509HCID 20536509—
SolventMethanolHCID 887—
ProductHCID 20536468HCID 20536468—

Reaction Conditions

Temperature35 °C

Reaction Steps

A mixture of 35 g. of 3-(2-fluoro-4-acetamidobenzoyl)propionic acid, 700 ml. of methanol and 1.4 ml. of concentrated sulfuric acid is refluxed for 76 hours. The solution is cooled to 35° C. and poured onto 7 g. of anhydrous sodium acetate while stirring. The reaction mixture is stirred in an ice-bath. The solid is collected and washed with cold methanol to yield methyl 3-(2-fluoro-4-aminobenzoyl)propionate as a white solid. A mixture of this solid, 9.2 g. of hexadecyl bromide and 4.2 g. of potassium carbonate is stirred for 20 hours at 125° C. under nitrogen. The mixture is then cooled to 25° C. and 30 ml. of water is added. After stirring, the product is filtered and washed with water. Recrystallization from methanol affords methyl 3-[2-fluoro-4-(hexadecylamino)benzoyl]propionate as a white solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04243609
Source datasetuspto-grants-1981_01
ORD IDord-d9714003dcb84e9393c62b152f61045b
Source noteuspto-grants-1981_01