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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1659915Generated: November 1, 2026

Benzocaine → Ethyl 4-[(pentadecafluoroheptyl)methylamino]benzoate

https://huagongshe.com/reaction/1659915

Reaction equation

Participants

RoleNameHCIDCharge
ReactantBenzocaineHCID 2337—
ReactantHexamethylphosphoramideHCID 12679—
Reactant2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-Pentadecafluorooctyl trifluoromethanesulfonateHCID 11016909—
SolventWaterHCID 962—
ProductEthyl 4-[(pentadecafluoroheptyl)methylamino]benzoateHCID 54405524—

Reaction Steps

A solution of 45 g. of (pentadecafluoroheptyl)-(trifluoromethanesulfonyloxy)methane and 28 g. of ethyl 4-aminobenzoate in 50 ml. of hexamethylphosphoramide is stirred at 120° C. for 72 hours, diluted with water, and filtered. A methylene chloride solution of the solid is dried over anhydrous magnesium sulfate and evaporated. The residue is recrystallized from acetonitrile to yield the product as a white solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04305959
Source datasetuspto-grants-1981_12
ORD IDord-87b820c988184a25877acfe107f09345
Source noteuspto-grants-1981_12