Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2396577Generated: October 31, 2026

Hydrochloric Acid → Ethyl chloronicotinate

https://huagongshe.com/reaction/2396577

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantDimethylformamideHCID 6228—
ReactantPhosphorus trichlorideHCID 24387—
ReactantEthyl 2-chloro-2-cyano-5-oxopentanoateHCID 10998104—
SolventTolueneHCID 1140—
ProductEthyl chloronicotinateHCID 279661487%

Reaction Conditions

Temperature80 °C

Reaction Steps

To a solution of DMF (3.22 g, 44 mmol) in 30 mL of toluene were added 6.05 g of PCl3 (44 mmol). Anhydrous HCl was introduced until saturated. Ethyl 2-chloro-2-cyano-5-oxopentanoate (4.5 g, 20 mmol) in 10 mL of toluene was added in 30 minutes. The resulting mixture was stirred for 1 h at 80° C., cooled to room temperature, quenched with water, and extracted with toluene. GLC analysis indicated that the title compound was formed in 87% yield.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05493028
Source datasetuspto-grants-1996_02
ORD IDord-b63b6a57313d4694b13aaf3007d2c163
Source noteuspto-grants-1996_02