Cesium carbonate → HCID 86725381, compound

Participants

Reaction Steps

A mixture of the product of Example 16B (490 mg, 1.3 mmol), tert-butyl piperazine-1-carboxylate (258 mg, 1.4 mmol), palladium diacetate (14 mg, 0.06 mmol), (±)-2,2′-bis(diphenylphosphino)-1,1′-binaphthalene (59 mg, 0.09 mmol) and cesium carbonate (848 mg, 2.6 mmol) in 1,4-dioxane (10 mL) was heated at reflux for 16 hours. The mixture was filtered through diatomaceous earth and the filtrate was concentrated. The residue was purified by flash chromatography on silica gel (200-300 mesh) eluting with 8/1 petroleum ether/ethyl acetate to give the title compound.

Provenance & Evidence