反应详情

温度

0 °C

(3-Methoxybenzyl)dimethylamine (2.03 mL, 2.00 g, 12.1 mmol) was dissolved in anhydrous THF (20 mL) under nitrogen and cooled to 0° C. with an ice-water bath. Butyllithium (2.5M in hexanes, 5.3 mL, 13.3 mmol) was added dropwise via syringe over 10 min (temperature kept below 5° C.). After stirring at 0° C. for 2 h, iodoethane (1.1 mL, 2.1 g, 13.8 mmol) was added dropwise via syringe over 25 min (temperature kept below 5° C.). The reaction mixture was allowed to reach ambient temperature. After 4 h, the reaction contents were transferred with diethyl ether and adsorbed onto silica gel (3.8 g) upon removal of the solvent in vacuo. Chromatography gave (2-ethyl-3-methoxybenzyl)dimethylamine (1.30 g, 56%) as a pale yellow solid.

1. customto reach ambient temperature
2. waitAfter 4 h
3. customthe reaction contents
4. customadsorbed onto silica gel (3.8 g) upon removal of the solvent in vacuo