反应详情

4-(3-Chloropropyl)-4H-benzo[1,4]thiazin-3-one (81MFO7) (0.073 g, 0.30 mmol), K2CO3 (0.12 g, 0.90 mmol), NaI (0.090 g, 0.6 mmol) and 4-butylidenepiperidine (0.050 g, 0.28 mmol) were mixed according to GP12. Prep TLC (SiO2; CH2Cl2/MeOH 10:1) gave the title compound (81MF26) (0.034 g, 33%). 1H NMR (CDCl3) d 7.34-7.31 (m, 1H), 7.23-7.20 (m, 1H), 7.00-6.95 (m, 1H), 5.10 (t, J=7.2 Hz, 1H), 4.04 (t, J=7.2 Hz, 2H), 3.34 (s, 2H), 2.37-2.32 (m, 6H), 2.23-2.14 (m, 2H), 1.96-1.90 (m, 2H), 1.86-1.78 (m, 2H), 1.37-1.27 (m, 2H), 0.86 (t, J=7.2 Hz, 3H); 13C NMR (CDCl3) d 165.1, 139.6, 136.0, 128.5, 127.2, 124.1, 123.4, 122.7, 118.1, 55.6, 55.4, 54.8, 43.2, 36.1, 31.7, 29.2, 28.3, 25.2, 23.2, 13.8.