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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 235161Generated: October 26, 2026

1-Undecyne → 3-(1-Undecynyl)benzaldehyde

https://huagongshe.com/reaction/235161

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1-UndecyneHCID 75249—
Reactant3-BromobenzaldehydeHCID 76583—
CatalystCopper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)HCID 24350—
CatalystHCID 178418476HCID 178418476—
SolventTriethylamineHCID 8471—
SolventEthyl AcetateHCID 8857—
Product3-(1-Undecynyl)benzaldehydeHCID 18373091109.1%

Reaction Conditions

Temperature55 °C

Reaction Steps

To a solution of 3-bromobenzaldehyde (30.3 g) and 1-undecyne (29.5 g) in triethylamine (120 ml) was added bis(triphenylphosphine)palladium(II) chloride (1.9 g) followed by copper(I) iodide (0.25 g). The mixture was stirred in the dark at 55° C. for 6 hrs, under nitrogen. After cooling to room temperature, the reaction mixture was diluted with ethyl acetate and filtered. The filtrate was washed with water and saturated sodium chloride solution, dried over anhydrous magnesium sulfate, filtered, and the filtrate was concentrated to yield 45.8 g of 3-(1-undecynyl)benzaldehyde, as an oil.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05597838
Source datasetuspto-grants-1997_01
ORD IDord-d853c40bd8714abaa37cbaea15ad0d66
Source noteuspto-grants-1997_01