Cyclopentylacetylene → HCID 57804210, compound

Participants

Reaction Conditions

Reaction Steps

4-Bromo-2-fluorobenzoic acid methyl ester (1.0 g, 4.0 mmol) was dissolved in triethylamine (5 mL). To the mixture was added copper iodide (38 mg, 5 mol %), followed by PdCl2(PPh3)2 (140 mg, 5 mol %) and ethynylcyclopentane (0.85 mL, 6.3 mmol). The mixture was heated in a sealed pressure tube at 80° C. for 3 hours. After completion of the reaction, the triethylamine was removed under vacuum and the residue was dissolved in EtOAc and filtered through Celite®. The organic layer was washed with water, brine, and dried (Na2SO4), filtered and the mixture concentrated under vacuum. The residue was purified using column chromatography on sililca using EtOAc-hexane (0-100% gradient) as eluent to give the product (0.92 g).

Provenance & Evidence