反应详情

A solution of (5-(bromomethyl)-2-chlorophenoxy)(tert-butyl)dimethylsilane 81 (1.00 g, 2.98 mmol) and potassium carbonate (0.453 g, 3.28 mmol) in DMF was stirred at room temp under N2. (R)-1-(3-Chlorophenyl)ethanamine (0.464 g, 2.98 mmol) was added to the solution and the reaction was stirred at room temperature for 8 h. The reaction was checked by TLC for completion. The reaction mixture was diluted with water and ether. The ether solution was washed with water (2×) and brine. The organic layer was dried over MgSO4, filtered, and concentrated in vacuo. The crude material was purified by silica gel chromatography using a 5% to 30% gradient of EtOAc in hexanes as the eluant. The desired fractions were combined and concentrated to give (R)—N-(3-(tert-butyldimethylsilyloxy)-4-chlorobenzyl)-1-(3-chlorophenyl)ethanamine 82 (0.612 g, 50.1% yield) as a colorless oil. The product was carried forth to the next step without further purification.

1. washThe ether solution was washed with water (2×) and brine
2. dry with materialThe organic layer was dried over MgSO4
3. filtrationfiltered
4. concentrationconcentrated in vacuo
5. customThe crude material was purified by silica gel chromatography
6. concentrationconcentrated