反应详情

Following the synthetic procedure of 6a as described in Example 1, compound 6b (77% yield) was synthesized from benzo[d]isothiazol-3-one and n-propyl isocyanate as a white solid. mp 90-91° C.; IR(CHCl3) 3290, 1712, 1662, 1542 cm−1; 1H-NMR (CDCl3) δ1.00 (t, J=7.3 Hz, 3H), 1.52-1.72 (m, 2H), 3.39-3.44 (m, 2H), 7.42 (t, J=7.8 Hz, 1H), 7.57 (d, J=7.8 Hz, 1H), 7.70 (t, J=7.8 Hz, 1H), 8.01 (d, J=7.8 Hz, 1H), 8.89 (br s, 1H); ESIMS m/e 237 (M++1).