Reaktion #2446083

Reaktionsgleichung

NaBH4

1-amino-2-propanol

cyclohexanone

→

1-(cyclohexylamino)propan-2-ol

Lösungsmittel

ethanol

Reaktionsbedingungen

Aufarbeitung

1. 1
   workup.STIRRINGThe reaction mixture was stirred at rt for 15 minutes
2. 2
   Sonstigequenched with water
3. 3
   FiltrationThe reaction mixture was filtered through a Celite® pad
4. 4
   Einengenthe filtrate was concentrated
5. 5
   workup.DISSOLUTIONThe residue was dissolved in DCM
6. 6
   Trocknendried over Na2SO4
7. 7
   Filtrationfiltered
8. 8
   Einengenconcentrated

Vorschrift

To a stirred solution of 1-amino-2-propanol (1.0 mL, 13.31 mmol) in ethanol (15 mL) was added cyclohexanone (1.9 g, 19.9 mmol) at 0° C. The reaction mixture was stirred at 0° C. for 15 minutes and then NaBH4 (0.725 g, 19.17 mmol) was added. The reaction mixture was stirred at rt for 15 minutes and then quenched with water. The reaction mixture was filtered through a Celite® pad and the filtrate was concentrated. The residue was dissolved in DCM, dried over Na2SO4, filtered and concentrated to provide 1-(cyclohexylamino)propan-2-ol. Yield: 2.6 g (crude). 1H NMR (DMSO-d6) δ 4.39-4.36 (m, 1 H), 3.61-3.57 (m, 1 H), 2.47-2.30 (m, 3 H), 1.78-1.75 (m, 2 H), 1.66-1.63 (m, 2 H), 1.55-1.52 (m, 1 H), 1.23-1.12 (m, 3 H), 1.03-0.89 (m, 5 H). 1-(cyclohexylamino)propan-2-ol may also be prepared by following procedure of Example 1.

Quelle