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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1604465Generated: October 31, 2026

Pyridinium chloride → HCID 67557366, compound

https://huagongshe.com/reaction/1604465

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPyridinium chlorideHCID 10176127—
ReactantHCID 67603239HCID 67603239—
SolventMethanolHCID 887—
SolventWaterHCID 962—
SolventSodium BicarbonateHCID 516892—
ProductHCID 67557366HCID 67557366—

Reaction Conditions

Temperature135 °C

Reaction Steps

A mixture of anhydrous pyridine hydrochloride (0.289 g, 2.50 mmol) and (±)-trans-3-(4-fluorophenyl)-7-methoxy-4-(4-(2-pyrrolidinoethoxy)phenyl)-chromane (0.11 g, 0.25 mmol) was heated to 135° C. for 18 h. The resulting dark brown solid was dissolved in a mixture of methanol (10 ml), water (50 ml) and sodium hydrogen carbonate solution (5 ml), and the product extracted into 9:1 dichloromethane /methanol (3×50 ml). The combined extracts were washed with brine, dried over magnesium sulfate and evaporated to an orange gum. The product was purified by column chromatography on silica gel 60, with 5% methanol in dichloromethane eluent, giving the purified product as a colourless wax.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05994390
Source datasetuspto-grants-1999_11
ORD IDord-45031c87cef34105b660f0973495b22e
Source noteuspto-grants-1999_11