反应详情

Sodium hydride (0.857 g, 21.42 mmol) was added portionwise to stirred Et2O (23.0 ml) at 25° C. under nitrogen. A solution of (1,4-dibenzylpiperazin-2-yl)methanol (1.411 g, 4.76 mmol) in DMF (8.0 ml) was added portionwise under nitrogen. The resulting suspension was stirred at room temperature for 1 h. A solution of methyl iodide (0.454 ml, 7.28 mmol) in Et2O (7.0 ml) was added dropwise to the reaction mixture at 10° C., under nitrogen. The resulting mixture was stirred at room temperature for 21 h. The reaction mixture was quenched with water (35 mL and extracted with Et2O (3×50 mL). The organic layers were combined and washed with water (50 mL), dried over MgSO4, filtered and evaporated to afford 1,4-dibenzyl-2-(methoxymethyl)piperazine (1.580 g, 107%) as a yellow oil. This was used directly without further purification.

1. stirringThe resulting mixture was stirred at room temperature for 21 h
2. customThe reaction mixture was quenched with water (35 mL
3. extractionextracted with Et2O (3×50 mL)
4. washwashed with water (50 mL)
5. dry with materialdried over MgSO4
6. filtrationfiltered
7. customevaporated