Potassium Carbonate → HCID 19066087, compound

Participants

Reaction Conditions

Reaction Steps

2-Chloro-5-trifluoromethylpyridine (Ishihara Corporation, 600 Montgomery St., San Francisco, Calif. 94111) (0.5 g, 2.8 mmol) and 5-(2-ethoxy-2-oxoethyl)-2-mercapto-4-methyl-1,3-thiazole (K. Fleishmann, K. H. Scheunemann, H. U. Schortemmer, G. Dickneite, J. Blumbad, G. F. Fischer, W. Durckheimer, and H. H. Sedlacek, Arzneim-Forsch./Drug Res., 1989, 39(II), 743) (0.6 g, 2.8 mmol) were dissolved in acetone (15 ml) under a reaction inert atmosphere. Freshly ground K2CO3 (0.42 g, 3.0 mmol) was added to this solution and the reaction was heated to 65° C. for 16 hours. The K2CO3 was filtered off and the acetone was removed via rotary evaporation. The remaining slurry was diluted with a saturated aqueous solution of sodium bicarbonate, extracted three times (200 ml) with methylene chloride, dried over MgSO4 and filtered. The solvent was then stripped off and the resulting solid was purified via flash chromatography (50% ether in hexane) to afford the title compound of this Example (0.57 g, 57% yield). 1H NMR (CDCl3): δ 8.69 (1H, d, J=2), 7.75 (1H, dd, J=8,2), 7.29 (1H, d, J=8), 4.20 (2H, q, J=7), 3.79 (2H, s), 2.43 (3H, s), 1.28 (3H, t, J=7).

Provenance & Evidence