反应详情

A solution of Cl2Pd(AmPhos) (Sigma-Aldrich, St. Louis, Mo., 0.020 g, 0.028 mmol), 1-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1,2,3,6-tetrahydropyridine (0.078 g, 0.350 mmol), 5-(2-bromo-4-(trifluoromethyl)phenyl)-N-(5-fluorothiazol-2-yl)-3,4-dihydroisoquinoline-2(1H)-sulfonamide (0.150 g, 0.280 mmol), and potassium phosphate (0.237 g, 1.119 mmol) in 2 mL dioxane 1 mL water, was heated to 110° C. 2 hours. After cooling to rt, the reaction mixture was diluted with EtOAc and washed with 1N citric acid. The organic layer was then concentrated. Purification of the resulting residue by reverse phase column chromatography [RediSep Gold C18 50 g, 10 to 100% (0.1% NH4OH in MeOH)/(0.1% NH4OH in water)] gave N-(5-fluorothiazol-2-yl)-5-(2-(1-methyl-1,2,3,6-tetrahydropyridin-4-yl)-4-(trifluoromethyl)phenyl)-3,4-dihydroisoquinoline-2(1H)-sulfonamide (0.044 g, 0.080 mmol). [M+H]+=553.0 1H NMR (400 MHz, Acetone-d6) δ ppm: 7.72 (d, J=7.8 Hz, 1H), 7.57 (s, 1H), 7.36 (d, J=7.9 Hz, 1H), 7.03-7.14 (m, 2H), 6.93 (d, J=7.5 Hz, 1H), 6.58-6.64 (m, 1H), 5.92 (br. s., 1H), 4.53 (d, J=17.3 Hz, 1H), 4.19 (d, J=17.6 Hz, 1H), 3.71-3.84 (m, 2H), 3.13-3.46 (m, 4H), 2.86-2.99 (m, 1H), 2.75-2.86 (m, 1H), 2.53-2.60 (s, 3H), 1.94-2.19 (m, 2H)

1. custom2 hours
2. washwashed with 1N citric acid
3. concentrationThe organic layer was then concentrated
4. customPurification of the resulting residue by reverse phase column chromatography [RediSep Gold C18 50 g, 10 to 100% (0.1% NH4OH in MeOH)/(0.1% NH4OH in water)]