Hydrochloric Acid → (2-Chloro-4-fluorophenyl)(3-fluoro-4-(pyrimidin-5-yl)pyridin-2-yl)methanone

Participants

Reaction Conditions

Reaction Steps

To a solution of 2-chloro-4-fluoro-1-iodobenzene (0.307 g, 1.199 mmol) in THF (Volume: 1.622 ml) cooled to −10° C. was added isopropylmagnesium chloride, 2M in THF (0.699 ml, 1.399 mmol) in one portion. After 30 min, 3-fluoro-4-(pyrimidin-5-yl)picolinonitrile (0.200 g, 0.999 mmol) was added. The reaction mixture was stirred at −10° C. for 30 min, then allowed to warm to room temperature and stirred overnight. Water and ice were carefully added, followed by acidification with 6 M HCl. After stirring for 1 hr, CH2Cl2 was added and the pH was adjusted to 8.5 with aqueous 4 M NaOH. The layers were separated. The aqueous phase was extracted with CH2Cl2 (5×). Organics combined, dried over Na2SO4, filtered, and concentrated to afford an orange residue. The crude material was dissolved in a minimal amount of CH2Cl2 to be chromatographed. Purification of the crude material by silica gel chromatography using an ISCO machine (24 g column, 35 mL/min, 60-100% EtOAc in hexanes over 23 min, tr=9 min) gave the title compound (0.029 g, 0.074 mmol, 7.44% yield) as an orange solid.

Provenance & Evidence