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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2085209Generated: October 30, 2026

Ammonium Chloride → 1-(4-(2-Hydroxy-3-(4-(naphthalen-2-yl)piperidino)-propyloxy)benzo(b)furan-2-yl)ethanol

https://huagongshe.com/reaction/2085209

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAmmonium ChlorideHCID 25517—
ReactantSodium borohydrideHCID 4311764—
Reactant(S)-4-(2-hydroxy-3-(4-(naphthalen-2-yl)piperidino)-propyloxy)benzo(b)furan-2-yl methyl ketone maleateHCID 69497711—
SolventMethanolHCID 887—
Product1-(4-(2-Hydroxy-3-(4-(naphthalen-2-yl)piperidino)-propyloxy)benzo(b)furan-2-yl)ethanolHCID 22729129100.5%

Reaction Steps

(S)-4-(2-Hydroxy-3-(4-(naphthalen-2-yl)piperidino)-propyloxy)benzo(b)furan-2-yl methyl ketone (0.30 g) obtained in Example 56 was dissolved in methanol and sodium borohydride (30 mg) was added at room temperature. The mixture was stirred for 20 min. To the reaction mixture was added saturated aqueous ammonium chloride solution and the solvent was evaporated under reduced pressure. The obtained residue was dissolved in ethyl acetate, and the mixture was washed with water and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure to give the title compound (0.24 g) as brown crystals, melting point 143-144° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06720320B2
Source datasetuspto-grants-2004_04
ORD IDord-e6b1f7927fb6409c917c9f8ef3ad9368
Source noteuspto-grants-2004_04