Benzylamine → (3S,6R)-1-[6-Chloro-2-(methylamino)-4-pyrimidinyl]-6-methyl-N-(phenylmethyl)-3-piperidinecarboxamide

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Reaction Steps

To a suspension of (3S,6R)-1-[6-chloro-2-(methylamino)-4-pyrimidinyl]-6-methyl-3-piperidinecarboxylic acid (2.2 g, 7.73 mmol) in CH2Cl2 (30 mL) at room temperature was added Hunig's base (1.75 mL, 10.04 mmol, 1.3 equiv) and benzylamine (1.01 mL, 9.27 mmol, 1.2 equiv), and the resulting mixture was chilled in an ice bath. To this stirred solution was added HATU (3.23 g, 8.50 mmol, 1.1 equiv) in one portion, and the resulting suspension was stirred in the ice bath for 30 minutes. LCMS showed conversion complete. The mixture was filtered through celite, and the filtrate was concentrated in vacuo. Silica gel column chromatography using a gradient elution of 1% EtOAc in CHCl3 to 40% EtOAc in CHCl3 afforded the title compound (3.05 g) as a gum. LC-MS (ES) m/z=374 [M+H]+.

Provenance & Evidence