Cyclopropylacetylene → HCID 57804112, compound

Participants

Reaction Steps

Ethyl 4-bromo-3-(cyclopropylmethoxy)benzoate (0.77 g, 2.57 mmol), ethynylcyclopropane (0.45 mL of a 70% w/v solution in toluene, 3.86 mmol), copper(I) iodide (49 mg, 0.26 mmol) and bis(triphenylphosphine)palladium(II) chloride (0.36 g, 0.51 mmol) were placed in 50 mL triethylamine and stirred in a sealed tube at room temperature for 20 h. The reaction was diluted with MeOH and filtered through Celite®., then the filtrate was concentrated to an oil. Purification by column chromatography on silica gel using 25% EtOAc/hexane gave the product (0.47 g, 61%) as a brown oil.

Provenance & Evidence