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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1703095Generated: October 29, 2026

Benzocaine → Ethyl 4-[(7-phenylheptyl)amino]benzoate

https://huagongshe.com/reaction/1703095

Reaction equation

Participants

RoleNameHCIDCharge
ReactantBenzocaineHCID 2337—
ReactantSodium IodideHCID 5238—
ReactantHexamethylphosphoramideHCID 12679—
Reactant7-Phenyl-1-heptyl chlorideHCID 522410—
SolventWaterHCID 962—
SolventWater ethanolHCID 19096565—
ProductEthyl 4-[(7-phenylheptyl)amino]benzoateHCID 13079667—

Reaction Steps

A mixture of 8.25 g. of ethyl p-aminobenzoate, 5.06 g. of 7-phenylheptylchloride, 3.6 g. of sodium iodide and 25 ml. of hexamethylphosphoramide is heated in an oil bath at 110° C. for 20 hours. The mixture is chilled, diluted with 30 ml. of ethanol-water (1:1) and with water to give crystals, m.p. 65°-67° C. Recrystallization from ethanol gives white crystals, m.p. 66.5°-68° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04350822
Source datasetuspto-grants-1982_09
ORD IDord-5553a517e07940cbaccf0a4a1c818145
Source noteuspto-grants-1982_09