反应详情

The product of Example 27D (1.2 g, 2.6 mmol), triethylamine (1.4 mL, 10 mmol), cyanamide (0.32 g, 7.7 mmol) and Hg(OAc)2 (1.6 g, 5.1 mmol) in acetonitrile (20 mL) were processed as described in Example 16E to provide the title compound (0.93 g, 2.0 mmol, 77% yield). 1H NMR (300 MHz, CDCl3) δ ppm 1.38 (s, 9H), 1.73-1.96 (m, 2H), 1.99 (s, 3H), 2.22-2.46 (m, 4H), 3.91 (s, 3H), 4.76 (s, 2H), 6.63 (s, 1H), 6.94 (d, J=8.8 Hz, 1H), 7.31-7.39 (m, 2H); MS (DCI/NH3) m/z 475 (M+H)+. Anal. calculated for C23H27 ClN4O3S: C, 58.16; H, 5.73; N, 11.80. Found: C, 58.16; H, 5.66; N, 11.85.