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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 482050Generated: October 30, 2026

N-chloroacetyl-N-ethoxycarbonylmethyl-4-(2,2,3,3-tetrafluoropropoxy)aniline → 1-[4-(2,2,3,3-Tetrafluoropropoxy)phenyl]-2,5-piperazinedione

https://huagongshe.com/reaction/482050

Reaction equation

Participants

RoleNameHCIDCharge
ReactantN-chloroacetyl-N-ethoxycarbonylmethyl-4-(2,2,3,3-tetrafluoropropoxy)anilineHCID 19065094—
ReactantEthanol, reaction products with ammonia, distn. residuesHCID 22020343—
Product1-[4-(2,2,3,3-Tetrafluoropropoxy)phenyl]-2,5-piperazinedioneHCID 19065120—

Reaction Conditions

Temperature60 °C

Reaction Steps

The resulting N-chloroacetyl-N-ethoxycarbonylmethyl-4-(2,2,3,3-tetrafluoropropoxy)aniline (1.9 g) was dissolved in 20 ml of 10.5% ammonia-ethanol and the solution was stirred at 60° C. for four hours. After cooling, the crystals separated rated out therefrom were collected by filtration and washed with cold ethanol to give 1.5 g of 1-[4-(2,2,3,3-tetrafluoropropoxy)phenyl]-2,5-piperazinedione as colorless crystals.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05792780
Source datasetuspto-grants-1998_08
ORD IDord-8a7af90a05824b2c995a9b93224cf433
Source noteuspto-grants-1998_08