2-Aminothiazole → HCID 10222775, compound

Participants

Reaction Steps

A solution of 3-cyclopentyl-2-(4-pyrimidin-5-ylethynyl-phenyl)-propionic acid (150 mg, 0.53 mmol), benzotriazol-1-yloxytris(dimethylamino)phosphonium hexafluorophosphate (376 mg, 0.85 mmol), triethylamine (0.22 mL, 1.59 mmol) and 2-aminothiazole (85 mg, 0.85 mmol) in methylene chloride (5 mL) was stirred at 25° C. for 18 h. At this time, the reaction was diluted with water (10 mL). The organic phase was separated and washed with a 1N aqueous sodium hydroxide solution, and a saturated aqueous sodium chloride solution. The aqueous layers were each back-extracted with methylene chloride. The combined organic extracts were dried over magnesium sulfate, filtered, and concentrated in vacuo. Flash chromatography (Merck Silica gel 60, 230-400 mesh, 60/40 hexanes/ethyl acetate) afforded 3-cyclopentyl-2-(4-pyrimidin-5-ylethynyl-phenyl)-N-thiazol-2-yl-propionamide (102 mg, 54%) as a white solid: mp 149-151 ° C.; EI-HRMS m/e calcd for C23H22N4OS (M+) 402.1514, found 402.1516.

Provenance & Evidence