3-(4-Nitrophenyl)pyridine → 4-(Pyridin-3-yl)aniline
Reaktionsgleichung
[N+:1]([C:4]1[CH:9]=[CH:8][C:7]([C:10]2[CH:11]=[N:12][CH:13]=[CH:14][CH:15]=2)=[CH:6][CH:5]=1)([O-])=O>[Pd]>[NH2:1][C:4]1[CH:5]=[CH:6][C:7]([C:10]2[CH:11]=[N:12][CH:13]=[CH:14][CH:15]=2)=[CH:8][CH:9]=1Komponenten
3
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
In a flame-dried r.b. flask equipped with a magnetic stirring bar was dissolved 3-(4-nitrophenyl)pyridine (131 mg, 0.655 mmol) and 10% Pd on C (10 mg) in anhydrous CH2C12 (3 mL) was added. The flask was repeatedly evacuated and filled with N2 to remove any residual O2, and then H2 gas was introduced. The solution was stirred at rt for 18 h, filtered though a Celite™ plug and concentrated int vacuo to give the desired amine (105 mg, 95%) as an off-white solid. Data for 3-(4-aminophenyl)pyridine: Rf=0.17 (silica gel, methanol/CHCl3, 5/95); 1H NMR (400 MHz, acetone-d6) 8.77 (d, J=2.3, 1H), 8.42 (dd, J=6.4, 1.6, 1H), 7.88 (m, 1H), 7.41 (d, J=8.5, 2H), 7.33 (m, 1H), 6.78 (d, J=8.5, 2H), 4.86 (br s, 2H).