反应详情

A solution of 1-Benzyl-4-methyl-piperidin-4-ol (4.5 g, 22 mmol) in chlorobenzene (60 mL) was treated with anhydrous AlCl3 (15 g, 110 mmol). This mixture was stirred for 3 hr at reflux, then quenched into ice (250 g), basified with sodium hydroxide, and extracted with ethyl acetate (3×100 mL). The combined organics were dried over sodium sulfate and evaporated in vacuo. The residue was purified by silica gel chromatography (CH2Cl2→90:10 CH2Cl2/methanol) to yield 0.59 g (10%) of the title compound, ESI-MS m/z: 300 [M+1].

1. temperatureat reflux
2. customquenched into ice (250 g)
3. extractionextracted with ethyl acetate (3×100 mL)
4. dry with materialThe combined organics were dried over sodium sulfate
5. customevaporated in vacuo
6. customThe residue was purified by silica gel chromatography (CH2Cl2→90:10 CH2Cl2/methanol)