反应详情

Jones oxidant (CrO3/H2SO4/H2O) (48 ml) was added to a ice-cooled solution of 2,5-di-[4-(6-acryloyloxyhexyloxy)phenylcarbonyloxy]benzaldehyde (8.24 g, 12 mmol) in acetone (300 ml) in a dropwise fashion over a period of 30 min. The reaction mixture was stirred overnight at room temperature. The resulting green-orange mixture was filtered off to leave a green precipitate that was washed with 600 ml of ether. The combined organic solutions were washed with water until the orange coloration disappeared (6×250 ml). The colourless organic solution obtained was washed with saturated NaCl solution (2×300 ml), dried over MgSO4 and filtered. Removal of the solvent gave pure 2,5-di-[4-(6-acryloyloxyhexyloxy)phenylcarbonyloxy]benzoic acid as a white crystalline material. Yield 8.5 g.

1. filtrationThe resulting green-orange mixture was filtered off
2. customto leave a green precipitate that
3. washwas washed with 600 ml of ether
4. washThe combined organic solutions were washed with water until the orange coloration
5. customThe colourless organic solution obtained
6. washwas washed with saturated NaCl solution (2×300 ml)
7. dry with materialdried over MgSO4
8. filtrationfiltered
9. customRemoval of the solvent