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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 920314Generated: November 2, 2026

Picolinic acid → HCID 71236644, compound

https://huagongshe.com/reaction/920314

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPicolinic acidHCID 1018—
ReactantDiethyl MalonateHCID 7761—
ReactantCesium carbonateHCID 10796—
ReactantHCID 86676374HCID 86676374—
CatalystCopper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)HCID 24350—
Solvent1,4-DioxaneHCID 31275—
ProductHCID 71236644HCID 71236644196.8%

Reaction Conditions

Temperature80 °C

Reaction Steps

To a solution of 5-(4-chloro-3-(trifluoromethyl)phenoxy)-2-iodopyridine (6 g, 7.06 mmol), diethyl malonate (2.261 g, 14.12 mmol) and picolinic acid (0.261 g, 2.117 mmol) in 1,4-dioxane (60 mL) were added Cs2CO3 (6.90 g, 21.17 mmol) and copper(I) iodide (0.134 g, 0.706 mmol). The reaction mixture was stirred at 80° C. for 10 hr. and then concentrated under reduced pressure. The reaction mixture was then extracted with CH2Cl2. The organic layer was separated and concentrated under reduced pressure to provide the diethyl 2-(5-(4-chloro-3-(trifluoromethyl) phenoxy)pyridin-2-yl)malonate (6 g, 77%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09273054B2
Source datasetuspto-grants-2016_03
ORD IDord-01d9ed62b8334a588e2da865e4a759f8
Source noteuspto-grants-2016_03