1-Hydroxybenzotriazole → N-[2-(4-Methoxy-phenyl)-2-oxo-ethyl]-isophthalamic Acid Methylester

関与物質

反応手順

1.8 g (5.5 mmol) of isophthalic acid monomethyl ester from Preparation 1, 3.5 g (18.5 mmol) of EDAC.HCl, 2.5 g (18.5 mmol) of HOBt, and 3.1 g (15.4 mmol) of 2-amino-1-(4-methoxy-phenyl)-ethanone hydrochloride were dissolved in 20 mL of dimethylformamide. 1.9 g (15.4 mmol) of di-isopropyl ethylamine was then added. Stirring was continued overnight at room temperature. Water (60 ml) was added, and the product was filtered, washed with water. The resulting solid was triturated in hot methanol, filtered and dried in a vacuum oven overnight at 70° C. to provide 3.5 g (69%) desired product. MS: m/z (APCI, AP+) 328 [M−]+ NMR: DMSO 1H δ (ppm) 3.84 (3H, s); 3.88 (3H, s); 4.73 (2H, d, J=5.6 Hz); 7.04–7.08 (2H m); 7.63–7.66 (1H, t, J=7.8 Hz); 7.99–8.027 (2H, m); 8.097–8.16 (2H, m); 8.47–8.48 (1H, m); 9.00–9.03 (1H, t, J=5.8 Hz).

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