Reaktion #61983

Reaktionsgleichung

product

4-(3-Piperidin-1-yl-propoxy)-benzaldehyde

piperidin-4-yl-pyridin-2-yl-amine

sodium triacetoxyborohydride

DCM

sodium hydroxide

→

ammonia DCM

Ausbeute 3.0%

title compound

{1-[4-(3-Piperidin-1-yl-propoxy)-benzyl]-piperidin-4-yl}-pyridin-2-yl-amine

Lösungsmittel

acetic acid

Reaktionsbedingungen

Aufarbeitung

1. 1
   Extraktionextracted with DCM (3×10 mL)
2. 2
   TrocknenThe combined organic phases were dried (sodium sulfate)
3. 3
   Sonstigeevaporated

Vorschrift

A solution of the product of Example 9 (240 mg), piperidin-4-yl-pyridin-2-yl-amine (166 mg), and acetic acid (0.12 mL) in DCM (5 mL) was treated with sodium triacetoxyborohydride (290 mg). After 16 h, the resulting mixture was treated with 10% sodium hydroxide (7 mL) and extracted with DCM (3×10 mL). The combined organic phases were dried (sodium sulfate) and evaporated. Chromatography of the residue (3% 2 M methanolic ammonia/DCM) gave the title compound as a colorless oil (188 mg). 1H NMR (400 MHz, CDCl3): 8.06 (m, 1H), 7.38 (m, 1H), 7.20 (d, J=8.8 Hz, 2H), 6.84 (d, J=8.8 Hz, 2H), 6.53 (m, 1H), 6.34 (d, J=8.3 Hz, 1H), 4.36 (br, m, 1H), 3.99 (t, J=6.6 Hz, 2H), 3.60 (m, 1H), 3.45 (s, 2H), 2.81 (m, 2H), 2.47 (m, 2H), 2.47 (br, 3H), 2.15 (m, 2H), 2.05-1.93 (m, 4H), 1.62-1.54 (m, 4H), 1.50 (m, 1H), 1.44 (m, 2H).

Quelle