Cesium carbonate → HCID 59837596, compound

Participants

Reaction Steps

In a dry 25 mL round bottom flask, 7-(2-chloro-5-methoxy-phenyl)-5-methyl-benzo[1,2,4]triazin-3-ylamine (0.625 g, 2.08 mmol, 1 equiv), 1-[2-(4-bromo-phenylsulfanyl)-ethyl]-pyrrolidine (0.894 g, 3.12 mmol, 1.5 equiv), cesium carbonate (2.04 g, 6.25 mmol, 3 equiv), 4,5-bis(diphenylphosphino)-9,9-dimethyl xanthene (0.24 g, 0.417 mmol, 0.2 equiv) and tris(dibenzylideneacetone)dipalladium (0.19 g, 0.208 mmol, 0.1 equiv) were combined. The reactants were flushed with argon, diluted with dioxane (12 mL), outfitted with reflux condenser and heated to reflux for 16 hours. The reaction was then filtered and the solvents were removed. The residue was taken up in minimum amount of DCM (ca. 5 mL) and precipitated out with excess hexanes. The resulting precipitate was collected and dried. 0.5 g of this crude product was taken on and purified by ISCO silica gel chromatography to afford product as an orange solid (0.224 g, 22% yield). MS (ESI+): m/z=506.1, LC retention time: 2.91 min.

Provenance & Evidence