反应详情

Experimental conditions analogous to those described for Step 5 of Example 60, from crude 1-(4-Methoxy-benzyl)-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid, 1.03 g (10.6 mmol) of N,O-dimethylhydroxylamine hydrochloride, 6.1 mL (4.43 g, 43.8 mmol) of triethylamine and 6.3 mL (6.80 g, 10.7 mmol) of 50% 1-propanephosphonic acid cyclic anhydride in 30 mL acetonitrile to give 1.90 g of the product as an off-white solid.