Imatinib → Imatinib

Participants

Reaction Steps

A solution of 4-hydroxy-3-methoxybenzoic acid (vanillic acid; Fluka, Buchs, Switzerland; 694 mg, 4 mmol) in ethanol (50 mL) is added to a solution of 4-[(4-methyl-1-piperazinyl)methyl]-N-[4-methyl-3-[[4-(3-pyridinyl)-2-pyrimidinyl]amino]phenyl]-benzamide (1.975 g, 4 mmol) in hot ethanol (150 mL at 90° C.). The solution is evaporated to dryness under reduced pressure and the resulting residue is re-crystallized from ethanol-acetone. The product is filtered-off and dried to afford 4-[(4-methyl-1-piperazinyl)methyl]-N-[4-methyl-3-[[4-(3-pyridinyl)-2-pyrimidinyl]amino]phenyl]-benzamide, vanillate as a crystalline solid, having the following analytical properties: Analysis found: C, 66.61; H, 6.18; N, 14.74; 0, 12.86%. H2O, 0.84%. Calculated for C37H39N7O5-0.31 H2O: C, 66.59; H, 5.98; N, 14.69; O, 12.73%. H2O, 0.84%.

Provenance & Evidence