Potassium Phosphate, Tribasic → HCID 57708994, compound

Participants

Reaction Conditions

Reaction Steps

(R)-t-Butoxycarbonylamino-(4-chloro-phenyl)-acetic acid methyl ester (Example 167-(1); 37 mg, 0.124 mmol), palladium acetate (1.8 mg, 0.008 mmol), 2-dicyclohexylphosphino-2′,6′-dimethoxy-1,1′-biphenyl (6.6 mg, 0.016 mmol), potassium phosphate (52 mg, 0.246 mmol) and water (0.2 mL) were added to a solution of 2-[4-(1-{4-[3-(t-butyldimethyl-silanyloxy)-4,4-dimethyl-pentyl]-3-methyl-phenyl}-1-ethyl-propyl)-2-methyl-phenyl]-4,4,5,5-tetramethyl-[1,3,2]dioxaborolane (Example 24-(1); 50 mg, 0.082 mmol) in toluene (3 mL). After replacement with nitrogen, the mixture was stirred at 100° C. for three hours. Then, the reaction mixture was dried with anhydrous magnesium sulfate and concentrated under reduced pressure. The resulting residue was purified by silica gel chromatography (hexane:ethyl acetate=4:1) to give the target compound as a colorless oil (28.5 mg, 47%).

Provenance & Evidence