反応式
[NH2:1][CH2:2][CH:3]([C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1)[CH2:4][P:5]([CH:10]([O:14][CH2:15][CH3:16])[O:11][CH2:12][CH3:13])(=[O:9])[O:6][CH2:7][CH3:8]>C(O)(C)(C)C.[Rh]>[NH2:1][CH2:2][CH:3]([CH:17]1[CH2:18][CH2:19][CH2:20][CH2:21][CH2:22]1)[CH2:4][P:5]([CH:10]([O:14][CH2:15][CH3:16])[O:11][CH2:12][CH3:13])(=[O:9])[O:6][CH2:7][CH3:8]参加物
4
実験手順
A solution of 3.45 g of ethyl 3-amino-2-phenylpropyl(diethoxymethyl)phosphinate in 25 ml of tertiary butanol is added to 2.0 g of 5% rhodium in alumina, suspended in 25 ml of tertiary butanol. The resulting mixture is hydrogenated at an atmosphere of 150 bar and temperature of 100° C. for a period of 20 hours. The mixture is then filtered and the filtrate is concentrated under reduced pressure. The crude product is chromatographed on silica gel using ethanol as eluent to give ethyl 3-amino-2-cyclohexylpropyl(diethoxymethyl)phosphinate as a viscous oil, 31P=47.1 and +47.0 ppm (CDCl3).
後処理
- filtrationThe mixture is then filtered
- concentrationthe filtrate is concentrated under reduced pressure
- customThe crude product is chromatographed on silica gel
出典と根拠
- ORDレコード
- ord-32d76b98ba78476e94d7176be384fd65
- 出典データセット
- uspto-grants-1988_09
- 特許番号
- US04772738
関連ノート
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