反应详情

温度

60 °C

Five parts of 3,5-diisopropyl-2-methoxybenzoic acid was dissolved in 80 parts of methyl alcohol, followed by the addition of an aqueous solution of 1.3 parts of 96% potassium hydroxide in 10 parts of water. The resulting mixture was heated to 60° C. An aqueous solution of 3.2 parts of zinc sulfate heptahydrate in 10 parts of water was dropped into the resulting mixture over a period of 15 minutes. After the completion of the dropping, the obtained mixture was stirred at that temperature for 2 hours, cooled to a room temperature and filtered to recover a white crystalline precipitate. This precipitate was dispersed in 60 parts of water, washed therewith and filtered. The obtained filter cake was dried to give 4.8 parts of a white crystal. The melting point thereof was 104 to 107° C.

1. temperaturecooled to a room temperature
2. filtrationfiltered
3. customto recover a white crystalline precipitate
4. additionThis precipitate was dispersed in 60 parts of water
5. washwashed
6. filtrationfiltered
7. filtrationThe obtained filter cake
8. customwas dried
9. customto give 4.8 parts of a white crystal
10. customthereof was 104 to 107° C.