反应详情

A reactor was charged with a solution of 2-chloromethyl-4-phenoxybenzoic acid methyl ester (˜68 Kg) in DMF, and stirring was initiated. The reactor was then charged with p-toluenesulfonylglycine methyl ester (66 Kg), potassium carbonate (60 Kg), and sodium iodide (4 Kg). The mixture was heated to at least 50° C. until reaction completion. The mixture was cooled. Sodium methoxide in methanol was charged and the mixture was stirred until reaction completion. Acetic acid and water were added, and the mixture was stirred, filtered and washed with water. Solid was purified by acetone trituration and dried in an oven giving 3a (Yield from step b): 58%; HPLC: 99.4%). 1H NMR (200 MHz, DMSO-d6) δ 11.60 (s, 1 H), 8.74 (s, 1H), 8.32 (d, J=9.0 Hz, 1 H), 7.60 (dd, J=2.3 & 9.0 Hz, 1H), 7.49 (m, 3 H), 7.24 (m, 3 H), 3.96 (s, 3 H); MS-(+)-ion M+1=296.09

1. temperatureThe mixture was heated to at least 50° C. until reaction completion
2. temperatureThe mixture was cooled
3. stirringthe mixture was stirred until reaction completion
4. stirringthe mixture was stirred
5. filtrationfiltered
6. washwashed with water
7. customSolid was purified by acetone trituration
8. customdried in an oven