反应详情

By the procedure of Example 12, except that 2.3 rather than 2.0 equivalents of triethylamine were used, ethyl 1-hydroxy-1-(2-methoxy-1-naphthyl)methanecarboximidate (16.5 g., 0.063 mole) in 500 ml. of tetrahydrofuran was converted to crude product. Recrystallization from ethyl acetate/toluene gave purified 5-(2-methoxy-1-naphthyl)oxazolidine-2,4-dione in two crops [7.7 g.; m.p. 199°-201° C.; ir (KBr) 1820, 1740 cm-1 ].

1. customRecrystallization from ethyl acetate/toluene
2. customgave
3. custompurified 5-(2-methoxy-1-naphthyl)oxazolidine-2,4-dione in two crops [7.7 g.; m.p. 199°-201° C.; ir (KBr) 1820, 1740 cm-1 ]