Chloro-N,N-diethylacetamide → Tepilamide fumarate

Reaktionsgleichung

[C:1]([O:8][CH3:9])(=[O:7])/[CH:2]=[CH:3]/[C:4]([OH:6])=[O:5].Cl[CH2:11][C:12]([N:14]([CH2:17][CH3:18])[CH2:15][CH3:16])=[O:13].C(=O)([O-])O.[Cs+]>CN1C(=O)CCC1>[C:4]([O:6][CH2:11][C:12](=[O:13])[N:14]([CH2:17][CH3:18])[CH2:15][CH3:16])(=[O:5])/[CH:3]=[CH:2]/[C:1]([O:8][CH3:9])=[O:7]

Komponenten

Versuchsvorschrift

Following general procedure A, methyl hydrogen fumarate (MHF) (0.39 g, 3.00 mmol) dissolved in NMP was reacted at ca. 55° C. with 2-chloro-N,N-diethylacetamide (0.44 g, 3.00 mmol) in the presence of CsHCO3 (0.69 g, 3.60 mmol) to afford 0.37 g (51% yield) of the title compound (1) after purification by silica gel column chromatography (Biotage) using a mixture of ethyl acetate (EtOAc) and hexanes (1:1) as eluent. M.p.: 53-56° C. 1H NMR (CDCl3, 400 MHz): δ 6.99-6.90 (m, 2H), 4.83 (s, 2H), 3.80 (s, 3H), 3.39 (q, J=7.2 Hz, 2H), 3.26 (q, J=7.2 Hz, 2H), 1.24 (t, J=7.2 Hz, 3H), 1.14 (t, J=7.2 Hz, 3H). MS (ESI): m/z 244.13 (M+H)+.