反应详情

To an ice cold solution of (trans)-1-(4-fluorobenzyl)-2,5-dimethylpiperazine (712 mg, 3.2 mmol) and triethylamine (506 mg, 5 mmol) in CH2Cl2 (5 mL) a solution of the 5-chloro-1-benzofuran-2-carbonyl chloride (4.2 mmol) in CH2Cl2 (2 mL) was dropwise added. The reaction mixture was stirred at room temperature over night and washed with 0.5 M aqueous NaOH. The organic layer was dried, concentrated and submitted to flash column chromatography (CHCl3/MeOH; 1:0→10:1) to yield 1.05 g (82%) of the title compound.

1. washwashed with 0.5 M aqueous NaOH
2. customThe organic layer was dried
3. concentrationconcentrated