反应详情

A mixture of 6-bromo-N-((tetrahydro-2H-pyran-4-yl)methyl)pyridin-2-amine (C, 271 mg, 1 mmol), 5-chloro-2-fluoropyridin-4-ylboronic acid (351 mg, 2.000 mmol), PdCl2(dppf).CH2Cl2 adduct (82 mg, 0.100 mmol) in DME (4.5 mL) and 2M Na2CO3 (318 mg, 3.00 mmol) was heated in a sealed tube at about 103° C. for about 2 hr. The mixture then was cooled to ambient temperature, diluted with EtOAc (˜25 mL) and MeOH (˜5 mL), filtered, and concentrated in vacuo to yield a resulting residue. The resulting residue was purified by column chromatography [SiO2, 12 g, EtOAc/heptane=10/90 to 50/50]. Fractions were combined and concentrated in vacuo providing 5′-chloro-2′-fluoro-N-((tetrahydro-2H-pyran-4-yl)methyl)-2,4′-bipyridin-6-amine (260 mg) as a yellow thick oil. LCMS (m/z): 322.1/323.9 [M+H]+; Retention time=0.60 min.

1. filtrationfiltered
2. concentrationconcentrated in vacuo
3. customto yield a resulting residue
4. customThe resulting residue was purified by column chromatography [SiO2, 12 g, EtOAc/heptane=10/90 to 50/50]
5. concentrationconcentrated in vacuo