Acetic Acid → HCID 68278217, compound

Participants

Reaction Conditions

Reaction Steps

A solution of 4-[5-methyl-4-[(piperidine-4-sulfonyl)methyl]-1,3-oxazol-2-yl]-N-(pyridin-3-ylmethyl)benzamide (300 mg, 0.66 mmol, 1.00 equiv), acetic acid (59.3 mg, 0.99 mmol, 1.50 equiv) and 2-methylpropanal (57 mg, 0.79 mmol, 1.20 equiv) in 1,2-dichloroethane (3 mL) was stirred at room temperature for 4 h. Sodium triacetoxyborohydride (420 mg, 1.98 mmol, 3.00 equiv) was added in small batches and the resulting solution was stirred overnight at 30° C. The resulting mixture was concentrated under vacuum and the residue was diluted with 2 mL of methanol. The solution was loaded onto a C18 column and eluted with acetonitrile/water to give 200 mg (59%) of 4-(5-methyl-4-[[1-(2-methylpropyl) piperidine-4-sulfonyl]methyl]-1,3-oxazol-2-yl)-N-(pyridin-3-ylmethyl)benzamide as a white solid. LC-MS (ES, m/z): 511 [M+H]+, 306, 256; 1HNMR (300 MHz, CD3OD, ppm) δ 8.60 (s, 1H), 8.47 (d, 1H), 8.11 (d, 2H), 7.99 (d, 2H), 7.89 (d, 1H), 7.47-7.43 (m, 1H), 4.65 (s, 2H), 4.41 (s, 2H), 3.33-3.08 (m, 3H), 2.50.

Provenance & Evidence