反应详情

To a solution of (1-tert-butoxycarbonyl-1H-Benzimidazol-2-ylmethyl)-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine (0.169 g, 0.451 mmol) in CH3CN (5 mL) was added N,N-diisopropylethylamine (0.25 mL, 1.44 mmol) followed by 4-bromobutyronitrile (0.10 mL, 1.01 mmol). The resultant mixture was heated to 80° C. for 5 d then cooled to room temperature. The mixture was concentrated and the residue was partitioned between CH2Cl2 (20 mL) and brine (10 mL). The phases were separated and the aqueous phase was extracted with CH2Cl2 (3×10 mL). The combined organic extracts were dried (Na2SO4) and concentrated. Purification of the crude material by column chromatography on silica gel (30:1:1 CH2Cl2—CH3OH—NH4OH) provided 108 mg (54%) of a yellow foam.

1. concentrationThe mixture was concentrated
2. customthe residue was partitioned between CH2Cl2 (20 mL) and brine (10 mL)
3. customThe phases were separated
4. extractionthe aqueous phase was extracted with CH2Cl2 (3×10 mL)
5. dry with materialThe combined organic extracts were dried (Na2SO4)
6. concentrationconcentrated
7. customPurification of the crude material by column chromatography on silica gel (30:1:1 CH2Cl2—CH3OH—NH4OH)