反应详情

To anhydrous K2CO3 (3.55 g) in acetone (10 mL) under N2 was added 2,4-dimethoxyphenol (3.3 g, J.O.C. 1984, 49, 4740) in acetone (20 mL). Chloromethyl methyl ether (1.79 mL) was added dropwise and the mixture was stirred at room temperature for 18 h then heated to 50° C. for 24 h. Additional quantity of chloromethyl methyl ether (1.79 mL) was added and the mixture was stirred for another day at 50° C. and evaporated. The residue was taken up with water and extracted with AcOEt. The extract was dried (MgSO4), filtered and evaporated. The residue was purified by column chromatography (silica gel; eluent: hexane/AcOEt 20:1 to 10:1) to give 1,3-dimethoxy-4-methoxymethoxybenzene (1.18 g).

1. temperaturethen heated to 50° C. for 24 h
2. stirringthe mixture was stirred for another day at 50° C.
3. customevaporated
4. extractionextracted with AcOEt
5. dry with materialThe extract was dried (MgSO4)
6. filtrationfiltered
7. customevaporated
8. customThe residue was purified by column chromatography (silica gel; eluent: hexane/AcOEt 20:1 to 10:1)