Heptane → Sodium 2-(3-{6-[2-(2,4-dichloro-phenyl)-ethylamino]-2-methoxy-pyrimidin-4-yl}-phenyl)-2-methyl-propionate

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Reaction Steps

A solution of 2-(3-{6-[2-(2,4-dichloro-phenyl)-ethylamino]-2-methoxy-pyrimidin-4-yl}-phenyl)-2-methyl-propionic acid [540 mg, 1.17 mmol, Example 49(b)] in MeOH (60 mL) is treated with Na2CO3 (187 mg, 1.78 mmol) and the mixture is stirred for 15 hours. The reaction mixture is filtered and the filtrate is concentrated to dryness. To the residue is added a mixture of methanol, EtOAc and acetone. The insoluble material is filtered off and the filtrate is evaporated. The residue is again treated with a mixture of methanol, EtOAc and acetone, the insoluble material filtered off and the filtrate is evaporated. The residue is again treated with a mixture of methanol, EtOAc and acetone, the insoluble material filtered off and the filtrate is evaporated. To the residue is added MeOH (1 mL) and EtOAc (5 mL), followed by heptane until the solution turned cloudy and a solid is formed slowly. Heptane is repeatedly added until the solution stay clear. The mixture is filtered affording sodium 2-(3-{6-[2-(2,4-dichloro-phenyl)-ethylamino]-2-methoxy-pyrimidin-4-yl}-phenyl)-2-methyl-propionate as a crystalline. LC/MS: RT=2.34 minutes, MS: 460 (M-Na+ 2H)+. 1H NMR [300 MHz, (CD3)2SO]: □ 7.97 (1H, br s), 7.24-7.7 (7H, m), 6.57 (1H, s), 3.86 (3H, s), 3.58 (2H, m), 2.98 (2H, m), 1.4 (6H, s).

Provenance & Evidence