Triethylamine → HCID 66940522, compound

Participants

Reaction Conditions

Reaction Steps

0.728 mL (6.5 mmol) of phenyl acetylene was added to a mixture of 10.1 g (5 mmol) of 4-bromopicolinic acid, 91 mg (0.13 mmol) of dichlorobis(triphenylphosphine)-palladium(II), 29 mg (0.15 mmol) of copper(I) iodide, 10 mL of triethylamine and 2 mL of DMF and heated at 80° C. overnight. The reaction mixture was filtered. The filtrate was concentrated and partitioned between 5 mL of 2 N Na2CO3 solution, 25 mL of water and 30 mL of ether. The aqueous layer was separated and washed again with ether (30 mL). 10% aq. HCl was added to adjust the pH to 5. The aqueous layer was extracted with dichloromethane (2×50 mL), and the combined organic layers were dried over sodium sulfate. Evaporation of the solvents in vacuo gave 1.028 g (4.61 mmol, 92%) of 4-phenylethynyl-pyridine-2-carboxylic acid. LCMS: 224 (M+1)+.

Provenance & Evidence