反应详情

To a solution of 2-chloro-N-methyl-3,4′-bipyridin-3′-amine (0.2 g, 910 μmol, example 313, intermediate a) in CH2Cl2 (5 mL) were added 3-(methylsulfonyl)-5-(trifluoromethyl)benzoyl chloride (522 mg, 1.82 mmol, example 223, intermediate d) and DIPEA (471 mg, 636 μL, 3.64 mmol) and the light yellow solution was stirred at room temperature for 16 hours. The reaction mixture was poured on saturated aqueous NH4Cl solution and CH2Cl2 and the layers were separated. The aqueous layer was extracted four times with CH2Cl2. The organic layers dried over MgSO4, filtered, treated with silica gel and evaporated. The compound was purified by silica gel chromatography on a 10 g column using a MPLC system eluting with a gradient of n-heptane:EtOAc (100:0 to 0:100). Light brown foam (0.393 g; 91%). MS (ESI): m/z=470.06 [M+H]+.

1. customthe layers were separated
2. extractionThe aqueous layer was extracted four times with CH2Cl2
3. dry with materialThe organic layers dried over MgSO4
4. filtrationfiltered
5. additiontreated with silica gel
6. customevaporated
7. customThe compound was purified by silica gel chromatography on a 10 g column
8. washeluting with a gradient of n-heptane:EtOAc (100:0 to 0:100)