Sodium Carbonate → (R)-4-((R)-1-(7-(1,2,3,4-tetrahydroisoquinolin-7-yl)quinolin-5-yloxy)ethyl)pyrrolidin-2-one

Participants

Reaction Conditions

Reaction Steps

150 mg Example 27, 241 mg 7-(4,4,5,5-Tetramethyl-[1,3,2]dioxaborolan-2-yl)-3,4-dihydro-1H-isoquinoline-2-carboxylic acid tert-butyl ester, 15 mg bis(triphenylphosphine)palladium(II) chloride, 671 μL 2N aqueous sodium carbonate and 2 mL DMF were heated for 2 hours at 90° C. The mixture was partitioned between DCM and NaHCO3 (sat aq) and the organic layer was separated, dried (Na2SO4), filtered and concentrated in vacuo. The residue was dissolved in 10 ml 25% TFA in DCM and stirred at 25° C. overnight then concentrated in vacuo. Purification by flash chromatography using 0-25% MeOH/DCM gave 75 mg (43%) of Example 101 (R)-4-{(R)-1-[7-(1,2,3,4-Tetrahydroisoquinolin-7-yl)-quinolin-5-yloxy]-ethyl}-pyrrolidin-2-one as yellow solid.

Provenance & Evidence