反应详情

To a solution of 2-(8-amino-5,6,7,8-tetrahydro-isoquinolin-4-yl)-5-chloro-3-ethyl-2,3-dihydro-isoindol-1-one (511.5 mg, 1.5 mmol) in DCM (15 mL) was added Et3N (3 mmol) and methanesulfonyl chloride (228 mg, 2 mmol) at 0° C. The resulting reaction mixture was stirred at room temperature for 1 hour before it was poured into 1 N HCl in dioxane (15 mL) and washed with EtOAc (15 mL×2). After the organic layer was decanted, the aqueous layer was basified to pH>8 with satd. aq. NaHCO3 solution. After extracted with EtOAc (20 mL×2), the combined organic layers were washed with brine, dried over anhy. Na2SO4, filtered and concentrated in vacuo to give the title compound (228 mg, 62%) as a mixture of four diastereomers. MS: 420.1 (M+H+).

1. customThe resulting reaction mixture
2. washwashed with EtOAc (15 mL×2)
3. customAfter the organic layer was decanted
4. extractionAfter extracted with EtOAc (20 mL×2)
5. washthe combined organic layers were washed with brine
6. customdried over anhy
7. filtrationNa2SO4, filtered
8. concentrationconcentrated in vacuo