反应详情

To a solution of 2-(2,5-dichloro-phenoxy)-nicotinic acid (50 mg, 0.18 mmol, 1.0 equiv; Example 31, Step 1) in anhydrous DMF (2 mL) was added N-ethyldiisopropylamine (116 mg, 154 μL, 0.90 mmol, 5.0 equiv; [CAS RN 7087-68-5]) and HATU (82 mg, 0.22 mmol, 1.2 equiv; [CAS RN 148893-10-1]) and the reaction mixture stirred at rt for 30 min. After addition of N-methyl-benzene-1,2-diamine (26.9 mg, 0.22 mmol, 1.2 equiv; [CAS RN 4760-34-3]) stirring was continued at rt for 90 min. Removal of the solvent under reduced pressure and purification by silica column chromatography using a MPLC system (CombiFlash Companion, Isco Inc.) eluting with a gradient of heptane/ethyl acetate afforded 33 mg (47%) of the title compound as a white solid. MS (ISP): 388.0 [M+H]+.

1. stirringstirring
2. waitwas continued at rt for 90 min
3. customRemoval of the solvent
4. customunder reduced pressure and purification by silica column chromatography
5. washeluting with a gradient of heptane/ethyl acetate