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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 585563Generated: October 26, 2026

Citric Acid → HCID 69590513, compound

https://huagongshe.com/reaction/585563

Reaction equation

Participants

RoleNameHCIDCharge
ReactantCitric AcidHCID 311—
ReactantSodium hydrideHCID 24758—
Reactant2,5-DibromopyridineHCID 69353—
Reactant3-Tetrahydropyranyloxy-1-propanolHCID 10855766—
SolventDimethylformamideHCID 6228—
ProductHCID 69590513HCID 69590513—

Reaction Conditions

Temperature0 °C

Reaction Steps

To a solution of 3-tetrahydropyranyloxy-1-propanol (1.0 g, 6.25 mmol) in DMF (10.0 mL) was added NaH (0.17 g, 95%) and stirred at 0° C. After 30 minutes, 2,5 dibromopyridine (1.0 g, 4.22 mmol) was added and the mixture was stirred at room temperature for 2 hours. The mixture was then poured into 5% cold citric acid (10.0 mL) and extracted with EtOAc (3×15 mL). The combined organic extracts were washed with water (3×15 mL), dried (Na2SO4), and concentrated to dryness. The resulting material was purified by silica gel flash chromatography using 20% EtOAc in hexane containing 0.5% triethyl amine. The appropriate fractions (monitored by TLC in 30% EtOAc in hexane) were combined and concentrated to give the desired product (1.1 g) as a colorless syrup. 1H-NMR and mass spectral data were consistent with the structure.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06933304B2
Source datasetuspto-grants-2005_08
ORD IDord-487b3c17856e43af9cfba77613ab90f5
Source noteuspto-grants-2005_08