Reaktion #802335

Reaktionsgleichung

5-(2-bromo-phenyl)-2,8-dimethyl-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole

4-pyridinylboronic acid

K3PO4

→

2,8-dimethyl-5-(2-pyridin-4-yl-phenyl)-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole

Ausbeute 7.8%

Lösungsmittel

DMF water

water

Reaktionsbedingungen

Aufarbeitung

1. 1
   Extraktionextracted with EtOAc
2. 2
   TrocknenThe organic layer was dried over anhydrous sodium sulfate
3. 3
   Einengenconcentrated under reduced pressure
4. 4
   Sonstigeto afford crude material, which
5. 5
   Sonstigewas purified by reverse phase HPLC

Vorschrift

To a de-aerated solution of 5-(2-bromo-phenyl)-2,8-dimethyl-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole (180 mg, 0.508 mmol), 4-pyridinylboronic acid (93.8 mg, 0.762 mmol) and K3PO4 (270 mg, 1.27 mmol) in DMF-water (9:1 mL) was added PdCl2(PPh3)2 (18 mg, 5 mol %). The reaction mixture was heated at 95° C. for 30 min under nitrogen atmosphere. The reaction mixture was diluted with water and extracted with EtOAc. The organic layer was dried over anhydrous sodium sulfate and concentrated under reduced pressure to afford crude material, which was purified by reverse phase HPLC to yield 2,8-dimethyl-5-(2-pyridin-4-yl-phenyl)-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole as semisolid (14 mg). 1H NMR (Freebase, CDCl3) d (ppm): 8.38 (d, 2H), 7.58 (m, 3H), 7.40 (d, 1H), 7.20 (s, 1H), 6.90 (m, 4H), 3.75 (m, 2H), 2.76 (m, 1H), 2.60 (m, 1H), 2.50 (m, 1H), 2.48 (s, 3H), 2.42 (s, 3H), 2.20 (m, 1H).

Quelle