Hydrochloric Acid → HCID 68109356, compound

Participants

Reaction Steps

9.00 g (40.3 mmol) of 6-bromonaphthalen-2-ol, 3.5 g (62.4 mmol) of prop-2-yn-1-ol, 1.00 g (1.43 mmol) of bis(triphenylphosphine)palladium(II) chloride, 0.5 g (2.63 mmol) of copper(I) iodide and 10 ml of diisopropylamine are left to stir overnight at 80° C. in 60 ml of DMF. The batch is subsequently added to 200 ml of ethyl acetate, 400 ml of water are added, and the mixture is acidified using hydrochloric acid. The aqueous phase is separated off and extracted three times with ethyl acetate. The combined org. phases are evaporated in vacuo, and the residue is filtered through silica gel with toluene/ethyl acetate (2:1). Crystallisation of the crude product from toluene/heptane gives 6-(3-hydroxyprop-1-ynyl)naphthalen-2-ol as a colourless solid.

Provenance & Evidence