反应详情

Using a method similar to Example 710, Part 2, using 2,3,5-trifluoro-4-hydroxy-benzaldehyde (1.00 g, 5.64 mmol), 6-chloronicotinonitrile (782 mg, 5.64 mmol) and K2CO3 (1.17 g, 8.47 mmol) gives 6-(2,3,6-trifluoro-4-formyl-phenoxy)-nicotinonitrile (907 mg) contaminated with 6-chloronicotinonitrile starting material. Dissolve this mixture in MeOH (15 ml) and treat with isoamylamine (194 mg, 2.23 mmol). After stirring for two hours, add NaBH4 (105 mg, 2.79 mmol) and stir for an additional hour. Purification as described in Example 710, Step 4, gives 6-{2,3,6-trifluoro-4-[(3-methyl-butylamino)-methyl]-phenoxy}-nicotinonitrile (383 mg) as a colorless oil.