1,2-Dichloroethane → 4-(4-((R)-(4'-chlorobiphenyl-2-yl)(dimethylamino)methyl)piperidin-1-yl)-N-(4-((R)-4-morpholino-1-(phenylthio)butan-2-ylamino)-3-(trifluoromethylsulfonyl)phenylsulfonyl)benzamide, hydrochloride salt

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Reaction Steps

(R)-4-(4-((4′-chlorobiphenyl-2-yl)(dimethylamino)methyl)piperidin-1-yl)benzoate, lithium salt (EXAMPLE 36, STEP 1, 0.105 g, 0.23 mmol), DMAP (56 mg, 0.46 mmol), and EDC (0.176 g, 0.92 mmol) were placed in a 40 ml vial and flushed with nitrogen. DCM (4.5 ml) and DIPEA (0.08 ml, 0.46 mmol) were added, and the solution was stirred at r.t for 15 minutes. (R)-4-(4-morpholino-1-(phenylthio)butan-2-ylamino)-3-(trifluoromethylsulfonyl)benzenesulfonamide (INTERMEDIATE 69, 0.127 g, 0.23 mmol) was added to the solution and the reaction mixture was stirred at r.t overnight. The reaction mixture was diluted with DCM and washed with 1N sodium bisulfate (aq.) followed by saturated aq. sodium bicarbonate. The organic layer was dried (Na2SO4), filtered, and evaporated under reduced pressure to give a residue which was purified by reverse phase HPLC (Gilson column, eluting with 30→50% H2O/ACN with 0.1% formic acid for 10 minutes) to provide a solid. The solid was dissolved in MeOH and the mixture was treated with 2N HCl in diethylether. Evaporation of the volatiles under reduced pressure provided the title compound (85 mg, yield: 35% for 2 steps).

Provenance & Evidence