(8aR)-Octahydropyrrolo(1,2-a)pyrazine → Abt-639

Beteiligte Stoffe

Reaktionsschritte

To 2-chloro-4-fluoro-5-{[(2-fluorophenyl)amino]sulfonyl}benzoic acid (0.9 g, 2.59 mmol) and 2-(3H-[1,2,3]triazolo[4,5-b]pyridin-3-yl)-1,1,3,3-tetramethylisouronium hexafluorophosphate(V) (1.08 g, 2.85 mmol) in N,N-dimethylacetamide (6.4 mL) and 2-methyltetrahydrofuran (15 mL) was added (R)-octahydropyrrolo[1,2-a]pyrazine (0.46 g, 3.68 mmol) in 2-methyltetrahydrofuran (4 mL). The reaction was stirred at ambient temperature overnight and diluted with 2-methyltetrahydrofuran (15 mL). The organic solution was washed with 6% NaHCO3/6% NaCl (10 mL), and the aqueous layer was extracted with 2-methyltetrahydrofuran (15 mL). The combined organic layers were washed with 6% NaHCO3/6% NaCl (10 mL) and saturated NaCl (2×10 mL), and then concentrated. The residue was concentrated from ethanol (2×10 mL) to give the title compound.

Herkunft & Nachweise