反应详情

Following general procedure A, methyl hydrogen fumarate (MHF) (0.50 g, 3.84 mmol) dissolved in NMP was reacted at ca. 55° C. with N-methyl, N-hydroxymethyl chloroacetamide (0.63 g, 4.61 mmol) in the presence of CsHCO3 (0.89 g, 4.61 mmol). The crude material precipitated out from a concentrated ethyl acetate (EtOAc) solution. The solid was filtered off and dried in vacuum to provide 0.54 g (61% yield) of the title compound (10) as a white solid. 1H NMR (CD3OD, 400 MHz): δ 6.92-6.89 (m, 2H), 5.01 (s, 2H), 3.80 (s, 3H), 3.78 (s, 3H), 3.20 (s, 3H). MS (ESI): m/z 232.06 (M+H)+.

1. customThe crude material precipitated out from a concentrated ethyl acetate (EtOAc) solution
2. filtrationThe solid was filtered off
3. customdried in vacuum