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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 931271Generated: October 31, 2026

Ethanol → HCID 178521014, compound

https://huagongshe.com/reaction/931271

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthanolHCID 702—
ReactantSodium dithionateHCID 146045—
Reactant5-Bromo-3-pyridinecarboxaldehydeHCID 2784734—
ReactantMethanone, [(3R)-1-(4-amino-5-nitro-2-pyrimidinyl)-3-piperidinyl]-1-pyrrolidinyl-HCID 89854015—
SolventWaterHCID 962—
ProductHCID 178521014HCID 17852101460%

Reaction Conditions

Temperature120 °C

Reaction Steps

To a solution of (R)-(1-(4-amino-5-nitropyrimidin-2-yl)piperidin-3-yl)(pyrrolidin-1-yl)methanone (0.5 g, 1.5 mmol) in a mixture of ethanol and water were added 5-bromonicotinaldehyde (0.35 g, 1.6 mmol) and sodium dithionate (1.1 g, 5.9 mmol). The reaction mixture was heated to 120° C. for 16 h. The reaction mixture was concentrated and partitioned between water and ethyl acetate. The organics were concentrated under reduced pressure and the resulting crude was purified via preparative TLC to afford (R)-(1-(2-(5-bromopyridin-3-yl)-3H-imidazo[4,5-b]pyridin-5-yl)piperidin-3-yl)(pyrrolidin-1-yl)methanone (400 mg, 60%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09296745B2
Source datasetuspto-grants-2016_03
ORD IDord-e8fd26ce69f34352b461988a968b53c9
Source noteuspto-grants-2016_03