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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1925077Generated: November 1, 2026

Dichloromethane → Hexahydrocyclopenta(c)pyrrol-5(1H)-one

https://huagongshe.com/reaction/1925077

Reaction equation

Participants

RoleNameHCIDCharge
ReactantDichloromethaneHCID 6344—
ReactantTrifluoroacetic acidHCID 6422—
Reactant(S)-tert-butyl 2-(2-cyanopyrrolidin-1-yl)-2-oxoethylcarbamateHCID 67519316—
ProductHexahydrocyclopenta(c)pyrrol-5(1H)-oneHCID 46911901—

Reaction Conditions

Temperature0 °C

Reaction Steps

5-oxo-hexahydro-cyclopenta[c]pyrrole-2-carboxylic acid tert-butyl ester 1e (0.32 g, 1.42 mmol) was dissolved in 10 mL of dichloromethane, and trifluoroacetic acid (3.27 mL, 42.7 mmol) was then added to the solution in an ice-water bath. Upon completion of the addition, the reaction mixture was stirred at 0° C. for 30 minutes, then the solvent was evaporated to dryness to obtain the title compound hexahydro-cyclopenta[c]pyrrol-5-one triflutate 1f which was directly used in the further reaction.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08178575B2
Source datasetuspto-grants-2012_05
ORD IDord-6d0293a7ed654f18b8e1d0662a34f259
Source noteuspto-grants-2012_05