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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 131285Generated: October 30, 2026

Hydrochloric Acid → HCID 69300805, compound

https://huagongshe.com/reaction/131285

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
Reactant4-Chlorobutyryl chlorideHCID 78370—
ReactantDiisopropylethylamineHCID 81531—
ReactantEthyl 4-(benzylamino)benzoateHCID 3832836—
SolventChloroformHCID 6212—
SolventDichloromethaneHCID 6344—
ProductHCID 69300805HCID 69300805—

Reaction Steps

To a solution of ethyl 4-benzylaminobenzoate (6.0 g) in methylene chloride (60 mL) is added dropwise chlorobutyryl chloride (3.95 mL) and N,N-diisopropylethylamine (6.14 mL) under ice-cooling, and the mixture is stirred for 12 hours. The reaction mixture is diluted with chloroform and thereto is added 10% HCl. The organic layer is separated, washed successively with water, a saturated sodium hydrogencarbonate solution, water, and saturated brine, dried over anhydrous sodium sulfate, and concentrated in vacuo. The residue is purified by flash column chromatography on silica gel (Solvent; n-hexane:ethyl acetate=4:1) to give ethyl 4-[N-benzyl-N-(4-chlorobutyryl)amino]benzoate (8.27 g, yield; quantitative) as an oil. MS (APCI) m/z; 360/362 [M+H]+

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07384952B2
Source datasetuspto-grants-2008_06
ORD IDord-3a129cab96f347c082e7fba86edc7c97
Source noteuspto-grants-2008_06