反应详情

This compound was prepared from tert-butyl 5-((diphenoxyphosphoryl)oxy)-2H-1,4-oxazine-4(3H)-carboxylate and 4-cyanophenylboronic acid using a procedure similar to that described in Example 2 (Steps 1-3a) above. The product was isolated as an off-white solid (58% yield); 1H-NMR (d6-DMSO) 1.09 (9H, s), 3.68 (2H, t), 4.13 (2H, t), 6.68 (1H, s), 7.37 (2H, d), 7.74 (2H, d); 13C-NMR (CDCl3) 27.7, 41.5, 66.8, 125.1, 131.8, 134.4; MS ES(+) 287.0 (M++1). IR λmax=2227, 1699 cm−1.