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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2377975Generated: October 30, 2026

Hydrochloric Acid → HCID 135483507, compound

https://huagongshe.com/reaction/2377975

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantHCID 136331968HCID 136331968—
Catalysttitanium(III) trichlorideHCID 10313229—
SolventMethanolHCID 887—
ProductHCID 135483507HCID 13548350741.2%

Reaction Conditions

Temperature65 °C

Reaction Steps

To a stirred solution of 3-[5-(4-bromo-phenyl)-1-hydroxy-1H-imidazol-2-yl]-4-[2-(3-chloro-phenyl)-2-hydroxy-ethylamino]-1H-pyridin-2-one (0.015 g, 0.030 mmol) in methanol (4 mL) was treated with titanium(III) chloride ((9.25 wt % in 27.4 wt % hydrochloric acid, ˜200 μL). The reaction was heated at 65° C. for 1 hour, then quenched with water and the solvents were evaporated. The residue was purified by Prep HPLC (ammonium acetate/acetonitrile/water) to give the title material (0.006 g, 41%) as a beige solid. HPLC 100% (220 nm), LCMS (+ESI, M+H+) m/z 485,487, (−ESI, M−H−) m/z 483, 485; 1H NMR (400 MHz, methanol-d4) δ (ppm): 3.64 (1H, dd, J=13.3 and 7.1 Hz), 3.74 (1H, dd, J=13.3 and 4.5 Hz), 5.03 (1H, m), 6.26 (1H, d, J=7.5 Hz), 7.23-7.56 (9H, m), 7.77 (1H, d, J=8.6 Hz).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07470713B2
Source datasetuspto-grants-2008_12
ORD IDord-6f98d53d4819489083fccb151e4ac8ff
Source noteuspto-grants-2008_12