Pyridine → Ethyl hydrogen (4-{[4-{[6-bromo-2-(methylcarbamoyl)pyridin-3-yl]amino}-5-(trifluoromethyl)pyrimidin-2-yl]amino}-3-chlorobenzyl)phosphonate

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Reaction Steps

A mixture of diethyl (4-{[4-{[6-bromo-2-(methylcarbamoyl)pyridin-3-yl]amino}-5-(trifluoromethyl)pyrimidin-2-yl]amino}-3-chlorobenzyl)phosphonate (Compound 58C, 4.30 g, 6.60 mmol) and Sodium iodide (1.483 g, 9.896 mmol) in Pyridine (21.4 mL, 265 mmol) was heated to reflux for 18 hours. The pyridine was removed in vacuo and the remaining solids were taken up in water (˜50 mL). This was treated with 6N HCl, dropwise with stirring, until pH-2 was reached. A thick ppt formed. This mixture was extracted with DCM twice. The combined organic layers were dried over Na2SO4, filtered and concentrated to 3.719 g of a tan solid (90%). The material was used without further purification. 1H NMR (400 MHz, CDCl3) δ 12.57 (br. s., 1H) 8.81 (d, J=8.8 Hz, 1H) 8.33 (s, 1H) 8.08 (q, J=4.5 Hz, 1H) 7.83 (br. s., 1H) 7.35-7.44 (m, 2H) 7.19 (dt, J=8.3, 2.4 Hz, 1H) 4.06 (quin, J=7.3 Hz, 2H) 3.10 (d, J=22.0 Hz, 2H) 3.02 (d, J=5.1 Hz, 3H) 1.29 (t, J=7.1 Hz, 3H).

Provenance & Evidence