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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1866131Generated: November 3, 2026

Water → HCID 68927469, compound

https://huagongshe.com/reaction/1866131

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantAcetaminophenHCID 1983—
ReactantHCID 10858041HCID 10858041—
SolventAcetoneHCID 180—
SolventPyridineHCID 1049—
ProductHCID 68927469HCID 6892746970.1%

Reaction Steps

To a solution of paracetamol (2.56 g, 16.92 mmoles) in pyridine (20 ml) cooled in an ice bath trans-3-[4-acetyloxy-3-methoxyphenyl]-2-propenoyl chloride (4.31 g, 16.92 mmoles) dissolved in acetone (45 ml) is dropped. The mixture is maintained under stirring in ice for 3 hours then it is poured into water (300 ml) and the precipitate is filtered and triturated with hexane to give trans-3-[4-acetyloxy-3-methoxyphenyl]-2-propenoic acid 4-(acetylamino)phenyl ester (4.38 g) as an orange solid. M.p. 246-250° C. Yield 70%.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07629368B2
Source datasetuspto-grants-2009_12
ORD IDord-b4a7ca0729ec4de19604822903cb3a77
Source noteuspto-grants-2009_12