Dimethylformamide → HCID 71533505, compound

Participants

Reaction Conditions

Reaction Steps

A sealed tube was charged with (S)-2-(5-bromo-pyridin-3-yloxymethyl)-azetidine-1-carboxylic acid tert-butyl ester (intermediate A-26, 0.260 g, 0.76 mmol), 1-methyl-6-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-3,4-dihydro-1H-quinolin-2-one (intermediate A-1, 0.239 g, 0.83 mmol) and DMF (3 mL). Then, bis(triphenylphosphine)palladium(II)chloride (0.053 g, 0.076 mmol), followed by 1N aqueous Na2CO3 solution (2.27 mL, 2.27 mmol) were added and the reaction was heated to 110° C. (pre-heated oil bath) for 1 h. The mixture was diluted with EtOAc, filtered through Dicalite and washed with EtOAc (20 mL). The resulting filtrate was poured into aq. NaHCO3 (20 mL) and the aqueous layer was extracted with EtOAc (20 mL). Combined organics were washed with brine, dried over Na2SO4, filtered and evaporated. The residue was purified by silica gel flash chromatography eluting with a 0 to 100% EtOAc-heptane gradient to give the title compound (0.277 g, 86%) as a light brown foam. MS: 424.1 (M+H+).

Provenance & Evidence