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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1788582Generated: November 3, 2026

Hydrochloric Acid → 1-Cyclohexyl-2-[2-(4-quinolyl)-6-quinolyl]benzimidazole-5-carboxylic acid

https://huagongshe.com/reaction/1788582

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantPotassium HydroxideHCID 14797—
Reactant1-(Quinolin-4-yl)ethan-1-oneHCID 12340190—
Reactant2-(4-amino-3-formyl-phenyl)-1-cyclohexyl-1H-benzoimidazole-5-carboxylic acid ethyl esterHCID 86600382—
SolventEthanolHCID 702—
Product1-Cyclohexyl-2-[2-(4-quinolyl)-6-quinolyl]benzimidazole-5-carboxylic acidHCID 527604319.3%

Reaction Conditions

Temperature75 °C

Reaction Steps

(1-Quinolin-4-yl-ethanone (43 mg, 0.25 mmol) and 2-(4-amino-3-formyl-phenyl)-1-cyclohexyl-1H-benzoimidazole-5-carboxylic acid ethyl ester (98 mg, 0.25 mmol) were dissolved in 500 μL ethanol and 500 μL 10% ethanolic KOH were then added. The reaction was stirred at 75° C. overnight. The reaction was acidified with 4N hydrochloric acid, extracted three times with ethyl acetate, and the organic extracts were dried with sodium sulfate and then evaporated. Purification via reverse-phase HPLC gave 24 mg product.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07511145B2
Source datasetuspto-grants-2009_03
ORD IDord-4019479c4c134858b9dfdacc9546d653
Source noteuspto-grants-2009_03