Acetic Acid → HCID 67147416, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 2-chloro-6-(piperidin-4-ylamino)-pyrimidine-4-carboxylic acid methyl ester dihydrochloride (51.6 mg, 0.15 mmol, 1.0 equiv; intermediate C5) in ethanol (2 mL) was added 4-chloro-3-ethoxy-benzaldehyde (33.2 mg, 0.18 mmol, 1.2 equiv; intermediate D2), acetic acid (27.0 mg, 0.45 mmol, 3.0 equiv) and N-ethyl diisopropylamine (58.3 mg, 0.45 mmol, 3.0 equiv) and the reaction mixture stirred at 55° C. After 1 h, sodium cyanoborohydride (47.1 mg, 0.75 mmol, 5.0 equiv), dissolved in ethanol (0.5 mL), was added and the mixture stirred at 55° C. After 8 h, a 10 M NaOH solution (0.75 mL) was added and heating continued at 55° C. over night. Removal of the solvent under reduced pressure and purification by preparative HPLC on reversed phase eluting with a gradient of acetonitrile/water provided 2.5 mg (4%) of the title compound. MS (ESI): 434.4 [M+H]+.

Provenance & Evidence