Reaktion #7252

Reaktionsgleichung

Benzaldehyde

N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine

sodium borohydride

→

product

Ausbeute 26.0%

N-benzyl-N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine

Ausbeute 26.0%

Lösungsmittel

MeOH

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigePurification of the crude product by flash chromatography (14 g silica, 30:1:1 EtOAc/CH3OH/NH4OH)

Vorschrift

Benzaldehyde (0.5 mL, 4.92 mmol) was condensed with N′-(1H-benzimidazol-2-ylmethyl)-N′-(5,6,7,8-tetrahydro-8-quinolinyl)-1,4-benzenedimethanamine (170 mg, 0.428 mmol) in dry MeOH (3 mL) for 17 h at room temperature and the resultant imine was reduced with sodium borohydride (329 mg, 8.70 mmol) for 1 h (see General Procedures A and B). Purification of the crude product by flash chromatography (14 g silica, 30:1:1 EtOAc/CH3OH/NH4OH) followed by radial chromatography (2 mm TLC plate, 100:1:1 CH2Cl2/CH3OH/NH4OH) gave the N-alkylated product (54 mg, 26%) as a foam.

Quelle