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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1973467Generated: November 1, 2026

Water → HCID 21491579, compound

https://huagongshe.com/reaction/1973467

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantOxalic AcidHCID 971—
ReactantN-Methyl-1,3-propanediamineHCID 80511—
ReactantCyclopentanone, 2-(2-oxo-2-phenylethyl)-HCID 10655725—
SolventAcetic AcidHCID 176—
SolventDiethyl EtherHCID 3283—
ProductHCID 21491579HCID 21491579—

Reaction Steps

8.82 g (0.1 mole) of methylaminopropylamine are added to a solution of 20.35 g (0.1 mole) of 2-phenacylcyclopentanone in glacial acetic acid under nitrogen. After refluxing for 12 hours, water is added and the aqueous solution is washed with ether. The aqueous phase is basified with sodium carbonate and extracted with ether to give a reddish oil. The oil is dissolved in ether and is added to an ether solution of oxalic acid to give 1-(3-methylaminopropyl)-2-phenyl-1,4,5,6-tetrahydrocyclopenta[b]pyrrole oxalate, m.p. 184°-185° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS03997557
Source datasetuspto-grants-1976_12
ORD IDord-4e4e697c1eef45d78e4efdd60526691f
Source noteuspto-grants-1976_12