反应详情

To a suspension of 10.5 g (0.437 mol) of mineral oil free sodium hydride in 1.2 liters of tetrahydrofuran was added dropwise 58.4 g (0.328 mole) of diethylcyanomethyl phosphonate. After the hydrogen evolution had ceased ca 60 min, 69.4 g (0.3 mole) of 2-benzyl-4-chlorobenzaldehyde, in 75 ml of tetrahydrofuran was added dropwise. The mixture was stirred overnight at room temperature. The tetrahydrofuran solution was decanted, and concentrated at room temperature. The residue was partitioned between 2 liters of water and 1.5 liters of ether. The ether solution was separated, washed with water, and dried with sodium sulfate. The ether was removed at reduced pressure to give a yellow oil which was used without further purification.

1. customThe tetrahydrofuran solution was decanted
2. concentrationconcentrated at room temperature
3. customThe residue was partitioned between 2 liters of water and 1.5 liters of ether
4. customThe ether solution was separated
5. washwashed with water
6. dry with materialdried with sodium sulfate
7. customThe ether was removed at reduced pressure
8. customto give a yellow oil which
9. customwas used without further purification