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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2393456Generated: November 2, 2026

Hydrochloric Acid → HCID 18975719, compound

https://huagongshe.com/reaction/2393456

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantTriethylamineHCID 8471—
ReactantCyclobutanecarbonyl chlorideHCID 78705—
Reactant2-(4-Methoxy-3-methylphenyl)ethan-1-amineHCID 6484660—
SolventWaterHCID 962—
SolventTetrahydrofuranHCID 8028—
ProductHCID 18975719HCID 1897571982.2%

Reaction Steps

Cyclobutanecarbonyl chloride (7 g) was added dropwise to a solution of 2-(4-methoxy-3-methylphenyl)ethylamine (11.36 g) and triethylamine (13 ml) in tetrahydrofuran (150 ml) and the resulting suspension stirred for 16 hours. The mixture was poured into water (150 ml), acidified with dilute hydrochloric acid and extracted with ethyl acetate (4×50 ml). The combined organic extracts were washed with brine then dried over magnesium sulphate and the solvent removed in vacuo. The residue was washed with petroleum ether (bp 40°-60° C.) to give crude N-[2-(4-methoxy-3-methylphenyl)ethyl]cyclobutanecarboxamide (12 g). A sample recrystallised from acetonitrile had mp 103°-104° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05807868
Source datasetuspto-grants-1998_09
ORD IDord-7e0fa43e788244fda70089cacf401c8b
Source noteuspto-grants-1998_09