反応 #1951052

反応方程式

methyl divinyl phosphine oxide

benzylamine

→

1-benzyl-4-methyl-[1,4]azaphosphinane 4-oxide

収率 64.2%

溶媒

THF water

反応条件

後処理

1. 1
   温度at reflux for 16 hours
2. 2
   その他The solvents were removed under reduced pressure
3. 3
   その他The residue was crystallized from CH2Cl2/ether

実験手順

A solution of methyl divinyl phosphine oxide (10.73 g, 92.4 mmol) and benzylamine (11.6 mL, 106.3 mmol) in 1:1 THF/water (250 mL) was heated at reflux for 16 hours. The solvents were removed under reduced pressure. The residue was crystallized from CH2Cl2/ether to give 1-benzyl-4-methyl-[1,4]azaphosphinane 4-oxide as a white solid (13.24 g, 64%). 1H NMR (400 MHz, DMSO) δ 7.13-3.37 (5H, m); 3.6 (2H, s); 2.81 (2H, m); 2.59 (2H, m); 1.7-1.9 (4H, m); 1.42 (3H, d, JH-C-P=13.6 Hz). 31P NMR δ32 ppm.

出典