反应详情

The title compound was prepared from methyl 3-benzyloxy-4-oxo-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-2-carboxylate using a procedure similar to Example 13, Step 1, except that 4-(2-chloroacetyl)morpholine was used in place of iodomethane. 1H NMR (400 MHz, CDCl3) δ 7.53-7.50 (d, 2H), 7.37-7.28 (m, 3H), 5.31-5.30 (m, 3H), 4.49-4.46 (t, 2H), 4.41 (s, 2H), 3.93 (s, 3H), 3.88-3.84 (t, 2H), 3.77-3.71 (m, 3H), 3.65-3.62 (t, 2H), 3.55-3.52 (t, 2H); ES MS (M+1)=429.