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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1185331Generated: October 28, 2026

Ammonium Chloride → HCID 58464827, compound

https://huagongshe.com/reaction/1185331

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAmmonium ChlorideHCID 25517—
ReactantHCID 58464760HCID 58464760—
CatalystIronHCID 23925—
SolventEthanolHCID 702—
SolventWaterHCID 962—
ProductHCID 58464827HCID 5846482764.4%

Reaction Conditions

Temperature100 °C

Reaction Steps

To a solution of tert-butyl 4-(1-methyl-4-nitro-1H-pyrazol-5-yl)-5,6-dihydropyridine-1(2H)-carboxylate (0.15 g, 0.48 mmol) in ethanol (10 mL) and water (1 mL) was added ammonium chloride (0.131 g, 2.44 mmol) and iron powder (0.109 g, 1.95 mmol). The mixture was heated at 100° C. for 1 hr. The mixture was cooled and filtered through celite and washed with EtOAc. The organic layer was washed with water, separated and dried over MgSO4. The solvent was removed under reduced pressure to yield tert-butyl 4-(4-amino-1-methyl-1H-pyrazol-5-yl)-5,6-dihydropyridine-1(2H)-carboxylate as a brown oil (86 mg, 64%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08669361B2
Source datasetuspto-grants-2014_03
ORD IDord-db3f3398f35a46b89281efd894934c65
Source noteuspto-grants-2014_03