1-Hexyne → HCID 11424006, compound

Participants

Reaction Conditions

Reaction Steps

A solution of 10.0 g (54.05 mmol) of 3-bromo-benzaldehyde in 150 ml of piperidine was treated at RT with 1.029 g (5.40 mmol) of copper(I)iodide and 6.246 g (5.40 mmol) of tetrakis-(triphenylphosphine)-palladium and the mixture was then warmed up to 60° C. After 10 min, a solution of 9.30 ml=6.66 g (81.07 mmol) of hex-1-yne in 150 ml of piperidine was added drop by drop during 1 hour. After 30 min, the oil bath temperature was steadily increased to 80° C. The reaction mixture was then stirred at 80° C. for 15 hours and subsequently cooled down to RT. The solvent was evaporated and the residue poured into crashed ice, acidified with HCl (37%) to pH 2-3 and extracted twice with EtOAc; the organic phases were washed with water, dried over magnesium sulfate, filtered and evaporated. The residue was purified by flash column chromatography (n-heptane/EtOAc 1:0 to 97:3) to give 8.78 g (87%) of the title compound as yellow oil. MS: 186.2 (M+).

Provenance & Evidence