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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1842046Generated: November 2, 2026

Methanol → 3-(pyridin-4-yl)-1-trityl-1H-indazol-5-amine

https://huagongshe.com/reaction/1842046

Reaction equation

Participants

RoleNameHCIDCharge
ReactantMethanolHCID 887—
Reactant5-nitro-3-(pyridin-4-yl)-1-trityl-1H-indazoleHCID 60146025—
CatalystPalladiumHCID 23938—
SolventEthyl AcetateHCID 8857—
Product3-(pyridin-4-yl)-1-trityl-1H-indazol-5-amineHCID 5768581097.8%

Reaction Steps

To 5-nitro-3-(pyridin-4-yl)-1-trityl-1H-indazoie (0.8954 g, 0.00185 mol), 10% activated palladium on carbon (0.8954 g, 1 eq by weight) was added. The reaction flask was put under vacuum, and methanol (18.5 mL) and ethyl acetate (2 mL) was added. Hydrogen gas was bubbled through the reaction for 15 minutes. The reaction was stirred at room temperature for and additional 16 h. The reaction was filtered through celite and concentrated under vacuo. The crude product (0.819 g, 95% yield) was progressed to the next step without further purification.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08946216B2
Source datasetuspto-grants-2015_02
ORD IDord-904b3bcf50384f8980cb5db21bcc73f5
Source noteuspto-grants-2015_02