反应详情

The methyl 3-methoxy-2-naphthoate was diluted with excess 5 percent sodium hydroxide solution and the mixture was heated at its reflux temperature until the solution was clear. The solution was acidified with hydrochloric acid to provide a precipitate which was separated by filtration. Recrystallization from benzene provided the known intermediate 3-methoxy-2-naphthoic acid, m.p. 130°-132° C.

1. temperaturethe mixture was heated at its
2. temperaturereflux temperature until the solution
3. customto provide a precipitate which
4. customwas separated by filtration
5. customRecrystallization from benzene