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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 747674Generated: October 26, 2026

Benzocaine → Ethyl 4-(pyrrolidin-1-yl)benzoate

https://huagongshe.com/reaction/747674

Reaction equation

Participants

RoleNameHCIDCharge
ReactantBenzocaineHCID 2337—
Reactant1,4-DibromobutaneHCID 8056—
ReactantDiisopropylethylamineHCID 81531—
SolventBenzeneHCID 241—
SolventWaterHCID 962—
ProductEthyl 4-(pyrrolidin-1-yl)benzoateHCID 773371—

Reaction Steps

1.69 g (10.2 mmol) of ethyl 4-aminobenzoate was dissolved in 10 ml of benzene. 2.18 g (10.1 mmol) of 1,4-dibromobutane and 3.53 ml (20.2 mmol) of diisopropylethylamine were added to the solution, and they were heated under reflux for 48 hours. The reaction solution was diluted with water. After the extraction with ethyl acetate, the organic layer was washed with water and then with saturated Aqueous NaCl solution and dried over anhydrous magnesium sulfate. The solvent was evaporated to obtain the crude title compound.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07396844B1
Source datasetuspto-grants-2008_07
ORD IDord-8ee89e0e9cdc44f5953a58535c2cc55c
Source noteuspto-grants-2008_07