反応 #833526

反応方程式

3-[(6-bromohexyloxy)methyl]-3-methyloxetane

ethyl 4-hydroxybenzoate

potassium carbonate

dimethyl formamide

→

ethyl 4-[6-(2-methyloxetane-3-ylmetoxy)hexyloxy)benzoate

収率 80.6%

溶媒

Water

反応条件

後処理

1. 1
   その他to terminate
2. 2
   その他the reaction
3. 3
   抽出after extraction with ethyl acetate
4. 4
   抽出the liquid extract
5. 5
   洗浄was washed with an aqueous solution of 2N-sodium hydroxide and water successively
6. 6
   乾燥the organic layer was dried over anhydrous magnesium sulfate
7. 7
   その他The residues obtained
8. 8
   workup.DISTILLATIONby distilling off the solvent
9. 9
   その他were purified on silica gel chromatography (toluene/ethyl acetate=8/2)

実験手順

A mixture of 3-[(6-bromohexyloxy)methyl]-3-methyloxetane (84 g), ethyl 4-hydroxybenzoate (50 g), potassium carbonate (50 g) and dimethyl formamide (600 mL) was stirred at 90° C. for 4 hours. Water was added to the reaction mixture to terminate the reaction and, after extraction with ethyl acetate, the liquid extract was washed with an aqueous solution of 2N-sodium hydroxide and water successively, and the organic layer was dried over anhydrous magnesium sulfate. The residues obtained by distilling off the solvent were purified on silica gel chromatography (toluene/ethyl acetate=8/2), to obtain ethyl 4-[6-(2-methyloxetane-3-ylmetoxy)hexyloxy)benzoate (85 g).

出典