Water → N-(4-(4-fluorophenyl)-5-(hydroxymethyl)-6-isopropylpyrimidin-2-yl)-N-methylmethanesulfonamide

Participants

Reaction Conditions

Reaction Steps

Ethyl 2-(N-methyl-N-methanesulfonylamino)-4-(4-fluorophenyl)-6-isopropyl-pyrimidin-5-carboxylic acid (100.0 g) and toluene (500.0 mL) were added to a reactor under nitrogen atmosphere. The reaction mixture was cooled to −78° C. A solution of diisobutylaluminium hydride in toluene (1.5 M, 200.0 mL) was slowly added thereto. The temperature of the reaction mixture was adjusted to 0° C. The reaction mixture was stirred for over 1 hour and then water (500.0 mL) was added thereto. The separated organic layer was sequentially washed with 1N hydrochloric acid solution (500.0 mL), 5% sodium bicarbonate solution (500.0 mL), and then water (500.0 mL), and then concentrated under reduced pressure. n-Hexane (300.0 mL) was added to the resulting residue under stirring. The resulting suspension was filtered under reduced pressure, and then dried to obtain N-[4-(4-fluorophenyl)-5-hydroxymethyl-6-isopropyl-pyrimidin-2-yl]-N-methyl-methanesulfonamide as a white solid (72.3 g, yield 81%).

Provenance & Evidence