Diisopropylethylamine → (S)-2-{4-[4-(1-Acetylamino-ethyl)-phenyl]-piperidin-1-yl}-pyrimidine-5-carboxylic acid

Participants

Reaction Conditions

Reaction Steps

To 1.52 g (8.5 mmol) 2-chloropyrimidine-5-carboxylic acid methyl ester in 80 mL NMP are added 2.1 g (8.5 mmol (S)—N-[1-(4-piperidin-4-yl-phenyl)-ethyl]-acetamide (V.1) and 2.9 mL (17.1 mmol) DIPEA and the mixture is stirred for 4 h at 100° C. The solvent is removed in vacuo. The residue is treated with 100 mL MeOH and 10 mL 4N sodium hydroxide solution is added. The mixture is stirred for 1 h at 60° C. After cooling to rt 4N HCl solution is added until the pH is acidic. The precipitate is collected and dried to yield the desired product.

Provenance & Evidence