2-Mercaptobenzoic Acid → N-(2-{2-Methyl-4-[((S)-phenyl-(S)-piperidin-2-yl-methyl)-amino]-quinolin-8-yloxy}-ethyl)methanesulfonamide dihydrochloride

Participants

Reaction Steps

Tris-(dibenzylidenaceton)-dipalladium(0) (19.0 mg, 0.021 mmole) and 1,4-bis(diphenylphosphino)butane (9 mg, 0.021 mmole) were mixed with THF (10 mL). N-[2-(4-{[(S)—((S)-1-Allylpiperidin-2-yl)-phenylmethyl]-amino}-2-methylquinolin-8-yloxy)-ethyl]-methanesulfonamide (example 35, 130 mg, 0.256 mmole) in THF (5 mL) and 2-mercaptobenzoic acid (86.7 mg, 0.562 mmole) in THF (5 mL) were added and the mixture was stirred at RT for 2 hrs. The content of the flask was mixed with 1N NaOH and extracted with dichloromethane. The organic layer was washed with water and saturated NaCl solution and concentrated. The residue thus obtained was cystallized from isopropanol/water/HCl to obtain a white solid (42 mg, 30%).

Provenance & Evidence