Reaktion #2494794

Reaktionsgleichung

(4-(4-fluorobenzyl)piperazin-1-yl)(6-bromopyridin-3-yl)methanone

1-(4-cyanobenzyl)piperidine-4-carboxamide

N,N′-dimethylethylenediamine

potassium carbonate

→

solid

Ausbeute 117.7%

(6-(1-(4-cyanobenzyl)piperidine-4-carboxamido)pyridin-3-yl)(4-(4-fluorobenzyl)piperazin-1-yl)methanone

Ausbeute 117.7%

Lösungsmittel

toluene

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeThis mixture was purged with argon for 5 minutes
2. 2
   Sonstigeabsorbed on silica gel
3. 3
   SonstigePurification by column chromatography (silica, 0→5% MeOH—CH2Cl2)

Vorschrift

To a mixture of (4-(4-fluorobenzyl)piperazin-1-yl)(6-bromopyridin-3-yl)methanone (0.040 g, 0.11 mmol, 1.0 eq), 1-(4-cyanobenzyl)piperidine-4-carboxamide (0.028 g, 0.12, 1.1 eq), and N,N′-dimethylethylenediamine (0.012 mL, 0.11 mmol, 1.0 eq) was added anhydrous toluene (1.0 mL). This mixture was purged with argon for 5 minutes and copper(I)iodide (0.011 g, 0.058 mmol, 0.5 eq) and potassium carbonate (0.044 g, 0.23 mmol, 2.1 eq) were added. The reaction mixture was heated at 100° C. for 4.5 hours and then absorbed on silica gel. Purification by column chromatography (silica, 0→5% MeOH—CH2Cl2) yielded a green solid (0.070 g). Further purification using preparative TLC (silica, 4% MeOH—CH2Cl2) provided Compound 46 as a white solid (0.040 g, 67%). 1H nmr (D6-DMSO) δ 10.64 (1H, s), 8.32 (1H, s), 8.10 (1H, d, J 8.5 Hz), 7.81-7.74 (3H, m), 7.53-7.46 (2H, m), 7.31 (2H, t, J 8.0 Hz), 7.12 (2H, t, J 9.0 Hz), 3.64-3.36 (9H, m), 2.79 (2H, m), 2.35 (m, 4H), 1.99-1.87 (2H, m), 1.79-1.54 (4H, m); m/z: 542 [M+H]+. More information about this type of coupling is provided in Wrona, Iwona E.; Gozman, Alexander; Taldone, Tony; Chiosis, Gabriela; Panek, James S. Journal of Organic Chemistry (2010), 75(9), 2820-2835.

Quelle