反应详情

A mixture N-((5-bromopyridin-2-yl)methyl)-2-methoxyacetamide (387 mg, 1.494 mmol), 4,4,4′,4′,5,5,5′,5′-octamethyl-2,2′-bi(1,3,2-dioxaborolane) (493 mg, 1.942 mmol), PdCl2(dppf)-CH2Cl2Adduct (122 mg, 0.149 mmol) and potassium acetate (366 mg, 3.73 mmol) in dioxane (10 mL) was heated to 70° C. for 3 hr. LCMS indicated that the major product was boronic acid. After cooling to rt, the reaction mixture was filtered through celite and the filtrate was concentrated to afford (6-((2-methoxyacetamido)methyl)-pyridin-3-yl)boronic acid (335 mg, 1.495 mmol, 100% yield) as a brown oil. The material was used as is in the next step. MS (ES+) m/z: 225.0 (M+H); LC retention time: 0.38 min (analytical LCMS Method B).

1. filtrationthe reaction mixture was filtered through celite
2. concentrationthe filtrate was concentrated