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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 33842Generated: October 27, 2026

Ethyl Acetate → 4-[1-methyl-4-(4-pyridinyl)-1H-pyrazol-3-yl]Phenol

https://huagongshe.com/reaction/33842

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthyl AcetateHCID 8857—
Reactant4-[3-(4-Benzyloxy-phenyl)-1-methyl-1H-pyrazol-4-yl]-pyridineHCID 44234931—
CatalystPalladium hydroxideHCID 9942167—
SolventEthanolHCID 702—
Product4-[1-methyl-4-(4-pyridinyl)-1H-pyrazol-3-yl]PhenolHCID 13591521391.3%

Reaction Steps

To a solution of 4-[3-(4-Benzyloxy-phenyl)-1-methyl-1H-pyrazol-4-yl]-pyridine (1.28 g) in ethanol (50 ml)/ethyl acetate (50 ml) in a parr bottle was added Palladium hydroxide (500 mg). The parr bottle was charged to 40 psi on a shaker for 6 h. The reaction mixture was filtered and concentrated. MPLC biotage chromatography eluting with methanol (1-7%)/chloroform provided the title compound (860 mg, 91%). 1H NMR (400 MHz, DMSO) δ 9.53 (s, 1H), 8.39 (d, J=5.8 Hz, 2 H), 7.15 (m, 4H), 6.72 (d, J=8.7 Hz, 1H), 3.84 (s, 3H); MS: (M+H m/z=252.2).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07429665B2
Source datasetuspto-grants-2008_09
ORD IDord-d4fd34a2745b4481b3a507dcf0d1ea92
Source noteuspto-grants-2008_09