Reaktion #10081

Reaktionsgleichung

4-amino-2-(2,6-dioxo(3-piperidyl))isoindoline-1,3-dione

2-phenylacetyl chloride

→

product

Ausbeute 92.0%

N-[2-(2,6-dioxo(3-piperidyl))-1,3-dioxoisoindolin-4-yl]-2-phenylacetamide

Ausbeute 92.0%

Lösungsmittel

THF

Reaktionsbedingungen

Aufarbeitung

1. 1
   TemperaturThe mixture was heated
2. 2
   Temperaturto reflux for 18 hours
3. 3
   SonstigeThe solvent was evaporated in vacuo
4. 4
   Filtrationfiltered

Vorschrift

To a stirred suspension of 4-amino-2-(2,6-dioxo(3-piperidyl))isoindoline-1,3-dione (0.55 g, 2.0 mmol) in THF (30 ml) was added 2-phenylacetyl chloride (0.62 g, 4.0 mmol). The mixture was heated to reflux for 18 hours. The solvent was evaporated in vacuo and the resulting solid was slurried in diethyl ether (20 ml) and filtered to give 0.72 g (92%) of product as an off-white solid: mp 217–218°°C.; 1H NMR (DMSO-d6) δ 11.15 (s, 1H), 9.79 (s, 1H), 8.49 (d, J=8.4 Hz, 1H), 7.82 (t, J=7.9 Hz, 1H), 7.60 (t, J=7.3 Hz, 1H), 7.41–7.27 (m, 5H), 5.13 (dd, J=5.1 and 12.7 Hz, 1H), 3.85 (s, 2H), 2.98–2.83 (m, 1H), 2.64–2.44(m, 2H), 2.08–2.04 (m, 1H); 13C NMR (DMSO-d6) δ 172.71, 170.07, 169.74, 167.60, 166.61, 136.38, 136.10, 134.70, 131.41, 129.41, 128.58, 126.97, 125.96, 118.39, 116.90, 48.89, 43.47, 30.90, 21.91; Anal. Calcd. For C21H17N3O5: C, 64.45; H, 4.38; N, 10.74. Found: C, 64.23; H, 4.34; N, 10.53.

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