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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 475869Generated: October 30, 2026

Ethyl cyanoformate → HCID 58075576, compound

https://huagongshe.com/reaction/475869

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthyl cyanoformateHCID 69336—
ReactantLithium diisopropylamideHCID 2724682—
ReactantHCID 66709089HCID 66709089—
ProductHCID 58075576HCID 5807557683.3%

Reaction Conditions

Temperature-78 °C

Reaction Steps

2-(6-(trifluoromethyl)pyridin-3-yl)cyclopentanone (700 mg, 3.05 mmol) was added to a solution of LDA (2.291 mL, 4.58 mmol) at −78° C. After stirring for 30 min at −78° C., ethyl carbonocyanidate (0.329 mL, 3.36 mmol) was added to the reaction mixture. The resulting solution was warmed to room temperature with stirring over 3 h. The reaction mixture was quenched with 1 mL of water, washed with brine, dried over MgSO4, and purified by Biotage (Hexanes/EtOAc 2:1) to afford ethyl 2-oxo-3-(6-(trifluoromethyl)pyridin-3-yl)cyclopentanecarboxylate (764 mg, 2.54 mmol, 83% yield). LC-MS (M+H)+=302.2.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08637525B2
Source datasetuspto-grants-2014_01
ORD IDord-6eab1e6ff6df42819677a3802d800a98
Source noteuspto-grants-2014_01