Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 723998Generated: October 25, 2026

Ethyl anisate → HCID 21874054, compound

https://huagongshe.com/reaction/723998

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthyl anisateHCID 60979—
Reactant4-Chloro-2-methylpyridineHCID 581392—
ReactantLithium HexamethyldisilazideHCID 2733832—
SolventTetrahydrofuranHCID 8028—
ProductHCID 21874054HCID 21874054—

Reaction Conditions

Temperature45 °C

Reaction Steps

To a cold (0° C.) solution of 4-chloro-2-picoline (10 g, 78.4 mmol) and ethyl 4-methoxybenzoate (14.1 g, 78.4 mmol) in tetrahydrofuran (100 mL) was added lithium bis(trimethylsilyl)amide (157 mL, 1.0 M in tetrahydrofuran, 157 mmol) dropwise via a pressure equalizing funnel over half an hour. Upon complete addition, the ice bath was removed and the resulting solution was heated at 45° C. for 15 hours. The mixture was cooled to room temperature, and the solution was concentrated. Methanol was added to quench the reaction, resulting in the formation of a yellow precipitate. The precipitate was collected by filtration and dried to give the product as a mixture of enol and ketone tautomers. MS m/z 262 (M+1).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07141569B2
Source datasetuspto-grants-2006_11
ORD IDord-8158751891aa43319ab2d9f15e32c72a
Source noteuspto-grants-2006_11