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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 648301Generated: October 29, 2026

Benzocaine → Ethyl 4-(11-hydroxyundecylamino)benzoate

https://huagongshe.com/reaction/648301

Reaction equation

Participants

RoleNameHCIDCharge
ReactantBenzocaineHCID 2337—
ReactantTriethylamineHCID 8471—
ReactantHexamethylphosphoramideHCID 12679—
Reactant11-Bromo-1-undecanolHCID 74163—
SolventWaterHCID 962—
ProductEthyl 4-(11-hydroxyundecylamino)benzoateHCID 20482494—

Reaction Steps

A solution of 16 g. of 11-bromoundecanol, 9.9 g. of ethyl 4-aminobenzoate, and 6.0 g. of triethylamine in 50 ml. of hexamethylphosphoramide is stirred at 70° C. under argon for 128 hours. The resulting solution is cooled, diluted with water, and filtered. Recrystallization of the solid from acetonitrile affords ethyl 4-(11-hydroxyundecylamino)benzoate as a white, crystalline solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04411903
Source datasetuspto-grants-1983_10
ORD IDord-ee115a6f6afb4ef5b908376e964894e6
Source noteuspto-grants-1983_10