Related Products of 847729-27-5 ,Some common heterocyclic compound, 847729-27-5, molecular formula is C7H5ClFNO2, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc., below Introduce a new synthetic route.
STEP 2. Methyl 5-fluoro-2-methvlnicotinate; A mixture of methyl 2-chloro-5-fluoronicotinate (step 1, 1.5 g, 7.91 mmol), tetrakis (triphenylphoshine)palladium (914 mg, 0.79 mmol), methyboronic acid (521 mg, 8.70 mmol) and potassium carbonate (3.28 g, 23.7 mmol) in 1,4-dioxane (20 ml) was heated at 110 C for 20 h under nitrogen atmosphere. The reaction mixture was filtered through a pad of celite (Celite(trademark) (diatomaceous earth) ) and the filtrate was concentrated. The residue was purified by flush column chromatography on silica gel eluting with hexane/ethyl acetate (20/1 to 4/1) to afford 936 mg (64%) of the title compound: ¹H-NMR (CDCl3) No. 8.49 (1 H, d, J = 3.0 Hz), 7.93 (1 H, dd, J = 3.0, 8.7 Hz), 3.94 (3H, s), 2.81 (3H, s).
These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,847729-27-5, its application will become more common.
Reference:
Patent; PFIZER JAPAN INC.; PFIZER INC.; WO2005/105732; (2005); A1;,
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