反应详情

温度

110 °C

(S)-2-tert-butoxy-2-(7-(4-chlorophenyl)-2-(2-chloropyridin-4-yl)-5-methylbenzo[d]thiazol-6-yl)ethyl pivalate (40.0 mg, 0.070 mmol), 5-methoxy-3-pyridineboronic acid pinacol ester (19.7 mg, 0.084 mmol), potassium carbonate (29.0 mg, 0.210 mmol), and Pd(PPh3)4 (12.1 mg, 0.010 mmol) were placed in a microwave vial and the vial was vacuum pumped and flushed with argon three times. To this mixture was added degassed 1,4-dioxane (0.8 mL) and water (0.2 mL). The reaction mixture was heated at 110° C. for 1 h then cooled to rt. The aqueous layer was separated and extracted three times with ethyl acetate. All organic layers were combined, dried over Na2SO4, and concentrated. Purification by flash column chromatography on silica gel (hexanes/ethyl acetate eluent) provided the product. LCMS-ESI+: calc'd for C36H39ClN3O4S: 644.2 (M+H+); Found: 644.1 (M+H+); 1H NMR (400 MHz, CDCl3) δ 8.89 (s, 1H), 8.81 (d, J=4.9 Hz, 1H), 8.40 (d, J=2.7 Hz, 1H), 8.35 (s, 1H), 8.02 (s, 1H), 7.95 (s, 1H), 7.83 (d, J=5.2 Hz, 1H), 7.57 (d, J=8.4 Hz, 1H), 7.51 (d, J=8.5 Hz, 1H), 7.43 (d, J=8.4 Hz, 1H), 7.31 (d, J=8.7 Hz, 1H), 4.83 (dd, J=9.4, 2.7 Hz, 1H), 4.43 (dd, J=11.2, 9.5 Hz, 1H), 4.30 (dd, J=12.1, 2.9 Hz, 1H), 3.99 (s, 3H), 2.81 (s, 3H), 1.15 (s, 9H), 0.97 (s, 9H).

1. customflushed with argon three times
2. additionTo this mixture was added
3. customdegassed 1,4-dioxane (0.8 mL) and water (0.2 mL)
4. temperaturethen cooled to rt
5. customThe aqueous layer was separated
6. extractionextracted three times with ethyl acetate
7. dry with materialdried over Na2SO4
8. concentrationconcentrated
9. customPurification by flash column chromatography on silica gel (hexanes/ethyl acetate eluent)
10. customprovided the product