反应详情

Following a procedure analogous to that for the synthesis of Intermediate 1E, 1-benzyl 3-ethyl 4-fluoroisophthalate (1.50 g, 4.96 mmol) and N,N-dibutyl-4-chloro-5-methyl-1H-pyrazole-3-carboxamide (Intermediate 1B, 2.02 g, 7.44 mmol) were converted to the title compound (2.15 g, 78%). 1H NMR (CDCl3) δ 8.69 (d, J=2.0 Hz, 1H), 8.33 (dd, J=8.1, 2.0 Hz, 1H), 7.51-7.36 (m, 6H), 5.43 (s, 2H), 4.19 (d, J=7.0 Hz, 2H), 3.50 (s, 2H), 3.41 (s, 2H), 2.15 (s, 3H), 1.70-1.60 (m, 2H), 1.58-1.50 (m, 2H), 1.46-1.34 (m, 2H), 1.25-1.16 (m, 5H), 0.96 (t, J=7.4 Hz, 3H), 0.83 (t, J=7.3 Hz, 3H); MS(ESI+) m/z 554.2 (M+H)+.