Indoline → 1-(4-{(S)-1-[(R)-1-(4-Methoxy-phenyl)-ethyl]-pyrrolidin-2-yl}-pyridin-2-yl)-2,3-dihydro-1H-indole

Participants

Reaction Conditions

Reaction Steps

To a solution of 2-Bromo-4-{(S)-1-[(R)-1-(4-methoxy-phenyl)-ethyl]-pyrrolidin-2-yl}-pyridine (0.15 g, 0.41 mmol) in toluene (30 mL) are added indoline (0.10 g, 0.83 mmol), 2-(dicyclohexylphosphino)-biphenyl (14 mg, 0.04 mmol), Pd2(dba)3 (19 mg, 0.02 mmol) and potassium tert-butoxide (0.11 g, 1.04 mmol). The reaction mixture is stirred at 85° C. for 3 h and cooled to room temperature. Water and EtOAc are added to the mixture. The layers are separated and the aqueous layer is extracted with EtOAc. The combined organic layers are washed with brine, dried over Na2SO4, filtered and concentrated down. The crude product is purified by flash chromatography on silica gel (EtOAc/Hexane: 5%˜25%) to give (1-(4-{(S)-1-[(R)-1-(4-Methoxy-phenyl)-ethyl]-pyrrolidin-2-yl}-pyridin-2-yl)-2,3-dihydro-1H-indole (140 mg, 84%) as an oil. M/Z=400.2 [M+1]

Provenance & Evidence