4-Fluoroaniline → HCID 86624701, compound

Participants

Reaction Steps

21 mg (0.19 mmol) 4-Fluoroaniline was dissolved in tetrahydrofurane (1 ml). 65 mg (0.21 mmol) 2-[3-methoxy-4-(4-methyl-imidazol-1-yl)-phenylamino]-thiazole-5-carbaldehyde was added. The suspension was stirred at room temperature for 10 minutes. 133 mg (0.56 mmol) sodium triacetoxyborohydride and 23 mg (0.38 mmol) acetic acid were added and the reaction was stirred at room temperature over night. Since the reaction was not complete the same amount of 4-fluoroaniline, sodium triacetoxyborohydride and acetic acid were added and the reaction stirred at room temperature over night. 2N aqueous NaOH solution was added and the reaction was extracted once with methylene chloride. The organic layer was washed with brine, dried over sodium sulphate, filtered and the solvent was evaporated under reduced pressure. The crude product was purified on silica gel with ethyl acetate yielding 22 mg (26%) [5-(4-fluoro-benzyl)-4,5,6,7-tetrahydro-thiazolo[5,4-c]pyridin-2-yl]-[3-methoxy-4-(4-methyl-imidazol-1-yl)-phenyl]-amine as a light yellow solid. MS ISP (m/e): 410.1 (100) (M+H)+. 1H NMR (CDCl3, 250 MHz): δ (ppm)=7.63 (s, 1H), 7.28-7.16 (m, 4H), 6.95-6.87 (m, 4H), 6.66-6.60 (m, 2H), 4.39 (s, 2H), 3.85 (s, 3H), 2.29 (s, 3H).

Provenance & Evidence