反应详情

温度

120 °C

A mixture of morpholine (3 g, 34 mmol) and the freshly prepared 4-[(trifluoromethyl)sulfonyl] benzonitrile (1.2 g, 5.1 mmol, Ref.: A. M. Echavarren and J. K. Stille, J. Am. Chem. Soc. 1987, 109, 5478-5486.), is heated at 120° C. The conversion of the 4-[(trifluoromethyl)sulfonyl]benzonitrile is complete after 20 hours. Water (10 ml) is than added into the reaction mixture. The precipitate is filtered off, washed with water and dried under vacuum (30° C.). Recrystallisation (50% aqueous ethanol) of the dried crude product gives 0.5 g of the title-compound. Yield: 52%, m.p. 82-83° C.; MS 188 (100, M+); H1 NMR (CDCl3): δ 7.46 (dd, 2H), 6.81 (dd, 2H), 3.79 (t, 4H), 3.22 (t, 4H); C13 NMR (CDCl3): δ 153.69, 133.71, 120.07, 114.26, 101.16, 66.65, 47.49.

1. additionthan added into the reaction mixture
2. filtrationThe precipitate is filtered off
3. washwashed with water
4. customdried under vacuum (30° C.)
5. customRecrystallisation (50% aqueous ethanol) of the
6. customdried crude product