反应详情

To a solution of 8-[(2R)-2-hydroxy-2-(4-methyl-1-oxo-1,3-dihydro-2-benzofuran-5-yl)ethyl]-2-(4-methyl-5-oxo-2,5-dihydrofuran-3-yl)-2,8-diazaspiro[4.5]decan-1-one (Example 7) (1.1 g, 2.5 mmol) and methanesulfonyl chloride (0.584 mL, 7.49 mmol) in DCM (30 mL) was added triethylamine (1.22 mL, 8.74 mmol) and N,N-dimethylpyridin-4-amine (0.031 g, 0.250 mmol) at −10 to −15° C. (ice-NaCl). The mixture was stirred at the same temperature for 20 min, quenched with NH4Cl aqueous. The organic layer was separated, and the aqueous was extracted with DCM (30 mL). The combined organic layers were dried (MgSO4) and concentrated under reduced pressure to give product was used in the next step without further purification. LCMS: 459.05 (M+1).

1. customquenched with NH4Cl aqueous
2. customThe organic layer was separated
3. extractionthe aqueous was extracted with DCM (30 mL)
4. dry with materialThe combined organic layers were dried (MgSO4)
5. concentrationconcentrated under reduced pressure
6. customto give product
7. customwas used in the next step without further purification