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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 58591Generated: October 28, 2026

6,6-Dimethyl-5,7-dioxaspiro(2.5)octane-4,8-dione → 1-(3-Fluoro-4-(trifluoromethyl)phenyl)-2-oxopyrrolidine-3-carboxylic acid

https://huagongshe.com/reaction/58591

Reaction equation

Participants

RoleNameHCIDCharge
Reactant6,6-Dimethyl-5,7-dioxaspiro(2.5)octane-4,8-dioneHCID 79720—
Reactant4-Amino-2-fluorobenzotrifluorideHCID 2735914—
SolventEthanolHCID 702—
Product1-(3-Fluoro-4-(trifluoromethyl)phenyl)-2-oxopyrrolidine-3-carboxylic acidHCID 6683213235%

Reaction Steps

This compound was prepared according to general method 1 starting from 6,6-dimethyl-5,7-dioxaspiro[2.5]octane-4,8-dione (0.250 g; 1.45 mmol) and 3-fluoro-4-(trifluoromethyl)aniline (0.806 g; 4.36 mmol) in ethanol (3 mL). 1-(3-fluoro-4-(trifluoromethyl)phenyl)-2-oxopyrrolidine-3-carboxylic acid 0.147 g (35%) was obtained as a solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09434722B2
Source datasetuspto-grants-2016_09
ORD IDord-ade5901debbf4899bc90f0b706af608f
Source noteuspto-grants-2016_09