反应详情

Using the method of Example 3, Step B, 2-chloroisonicotinic acid, methyl ester (4.734 g, 27.59 mmol), 2-amino-4-methylthiazole (3.0 g, 26.28 mmol), potassium phosphate (2.393 ml, 28.90 mmol), Pd2(dba)3 (0.6016 g, 0.6569 mmol), 4,5-bis(diphenylphosphino)-9,9-dimethyl-9H-xanthene (0.4181 g, 0.7226 mmol) in toluene (20 mL) and water (0.5 mL) were reacted to afford methyl 2-(4-methylthiazol-2-ylamino)isonicotinate (4.682 g, 71.48% yield) as a white solid. 1H NMR (CDCl3) δ 10.25 (bs, 1H), 8.47 (dd, 1H), 7.40 (m, 1H), 7.39 (dd, 1H), 6.45 (d, 1H), 3.94 (s, 3H), 2.39 (d, 3H); Mass spectrum (apci) m/z=250 (100) (M+H).

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