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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 429420Generated: October 31, 2026

Pyridinium chloride → HCID 69963181, compound

https://huagongshe.com/reaction/429420

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPyridinium chlorideHCID 10176127—
ReactantHCID 70292445HCID 70292445—
ProductHCID 69963181HCID 69963181—

Reaction Steps

Thus (±)-cis-7-methoxy-3-(3-methoxyphenyl)-4-(4-(2-pyrrolidinoethoxy)phenyl)-chromane was de-methylated by heating with pyridine hydrochloride to give the racemic mixture, (±)-cis-7-hydroxy-3-(3-hydroxyphenyl)-4-(4-(2-pyrrolidinoethoxy)-phenyl)chromane. The title compound was then separated from this racemic mixture by means of preparative chiral HPLC {Chiradex 5 μm, 250×25 mm column; flow=20 ml/min; 40% methanol, 60% buffer (0.2% aqueous triethylammonium acetate, pH 3.5) eluent, 220 nm UV detection}. The title compound was the more slowly eluted enantiomer, Rt=46-64 min.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06316494B1
Source datasetuspto-grants-2001_11
ORD IDord-1eeeba0f269446f08678987f87617300
Source noteuspto-grants-2001_11