反応 #1951070

反応方程式

(4-Fluorophenyl) divinyl phosphine oxide

benzylamine

→

1-benzyl-4-(4-fluorophenyl)-[1,4]azaphosphinane 4-oxide

収率 82.0%

溶媒

THF

water

反応条件

後処理

1. 1
   濃縮The reaction mixture was concentrated by rotary evaporation
2. 2
   抽出the product was extracted into dichloromethane
3. 3
   洗浄washed with saturated brine
4. 4
   乾燥The organic phase was dried with sodium sulfate
5. 5
   ろ過filtered
6. 6
   濃縮concentrated by rotary evaporation
7. 7
   その他to yield 2.52 g of crude product
8. 8
   その他Impurities were removed
9. 9
   洗浄The product was then eluted from the silica with 10% methanol in ethyl acetate
10. 10
    その他The solvents were removed by rotary evaporation

実験手順

(4-Fluorophenyl) divinyl phosphine oxide (1.50 g, 7.65 mmol) and benzylamine (1.05 mL, 9.57 mmol) were dissolved in a mixture of 100 mL of THF and 100 mL of deionized water. The reaction mixture was heated at 90° C. overnight. The reaction mixture was concentrated by rotary evaporation and the product was extracted into dichloromethane and washed with saturated brine. The organic phase was dried with sodium sulfate, filtered, and concentrated by rotary evaporation to yield 2.52 g of crude product. Impurities were removed by passing a solution of the crude product in ethyl acetate through a plug of silica. The product was then eluted from the silica with 10% methanol in ethyl acetate. The solvents were removed by rotary evaporation to yield 1.89 g (6.24 mmol, 82%) of 1-benzyl-4-(4-fluorophenyl)-[1,4]azaphosphinane 4-oxide as a colorless oil. ESMS (m/z): (M+1)+ found, 304.

出典