反应详情

To a solution of 2-bromo-1-(4-fluorophenyl)-2-(4-methylthiophenyl)ethanone (Example 1, Step 3) (0.196 g, 0.578 mmol) in ethanol (6 mL) in a 25 mL round bottom flask was added 2,2-dimethylthiopropionamide from Step 1 (0.071 g, 0.606 mmol) and the mixture heated to reflux overnight. The reaction was cooled to room temperature, diluted with ethyl acetate (50 mL) and this solution washed successively with Na2CO3 (10% solution) and brine, dried over Na2SO4, filtered and concentrated in vacuo yielding 2-(tert-butyl)-4-(4-fluorophenyl)-5-(4-methylthiophenyl)thiazole as a pale yellow oil (0.162 g, 78%): 1H NMR (CDCl3) 300 mHz δ7.56-7.51 (m, 2H), 7.24 (d, J=8.48 Hz, 2H), 7.20 (d, J=8.48 Hz, 2H), 6.98 (t, J=8.85 Hz, 2H), 2.49 (s, 3H), 1.52 (s, 9H). MS (EI): m/e 357 (M+). HRMS Δ=0.1 mmu.

1. temperaturethe mixture heated
2. temperatureto reflux overnight
3. washthis solution washed successively with Na2CO3 (10% solution) and brine
4. dry with materialdried over Na2SO4
5. filtrationfiltered
6. concentrationconcentrated in vacuo