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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1626433Generated: November 1, 2026

Benzaldehyde → HCID 67287111, compound

https://huagongshe.com/reaction/1626433

Reaction equation

Participants

RoleNameHCIDCharge
ReactantBenzaldehydeHCID 240—
ReactantHydrochloric AcidHCID 313—
ReactantSodium CarbonateHCID 10340—
Reactant1,4-DioxaneHCID 31275—
ReactantTolylboronic acidHCID 79799—
Reactant2-Amino-6-bromopyridineHCID 300809—
CatalystHCID 178418397HCID 178418397—
SolventWaterHCID 962—
SolventTolueneHCID 1140—
ProductHCID 67287111HCID 6728711188.4%

Reaction Conditions

Temperature100 °C

Reaction Steps

To a solution of 6-bromopyridin-2-amine (0.500 g, 2.89 mmol) in toluene (10 ml) was added benzaldehyde (0.313 g, 2.95 mmol), and the reaction was stirred for 30 minutes. To this, p-tolylboronic acid (0.471 g, 3.47 mmol), sodium carbonate (0.368 g, 3.47 mmol), and water (10 ml) were added, and the reaction was degassed with argon. Tetrakis(triphenylphosphine)palladium (0.167 g, 0.144 mmol) was added, and the reaction was heated to 100° C. for 60 hours. The reaction was diluted with 10 ml of toluene and 10 ml of water, and the organic layer was collected. The organic layer was treated with 4M hydrogen chloride in dioxane (1.44 ml, 5.78 mmol) dropwise with vigorous stirring. The resulting solid was collected via filtration to yield pure 6-p-tolylpyridin-2-amine hydrochloride (0.564 g, 2.56 mmol, 88.4% yield).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08785445B2
Source datasetuspto-grants-2014_07
ORD IDord-0cbcf023e1174a2fb770afcec606b010
Source noteuspto-grants-2014_07