Cesium carbonate → HCID 58149025, compound

Participants

Reaction Conditions

Reaction Steps

Trifluoro-methanesulfonic acid 2-[(benzyloxycarbonyl-ethyl-amino)-methyl]-4-methanesulfonyl-phenyl ester (1.3 g, 2.62 mmol), [4-methoxy-3-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenyl]-acetic acid ethyl ester (1.26 g, 3.93 mmol), and cesium carbonate (2.55 g, 7.85 mmol) were combined in DMF. (1,1′-Bis(diphenylphosphino)ferrocene)-dichloropalladium(II) (0.213 g, 0.26 mmol) was added, and the reaction was immediately immersed in an oil bath pre-heated to 45° C. The reaction was stirred at 65° C. for 20 minutes, and then worked-up and purified to give the title compound, contaminated with a phenol by-product. The mixture was dissolved in CH2Cl2 (100 mL) and washed with 0.5N aqueous NaOH, and then concentrated to give the title compound.

Provenance & Evidence