isopropyl 2-chloro-4-fluoro-5-[5-chloromethyl-3,6-dihydro-3,4-dimethyl-2,6-dioxo-1(2H)-pyrimidinyl]-benzoate 以
异丙醇 为溶剂,
以there is obtained isopropyl-2-chloro-4-fluoro-5-[3,6-dihydro-3,4-dimethyl-5-isopropoxymethyl-2,6-dioxo-1(2H)-pyrimidinyl]-benzoate, 1H-NMR (CDCl3, 400 MHz) 7.82 ppm (d, 1H), 7.32 ppm (d, 1H), 5.22 ppm (m, 1H), 4.45 ppm (d, 1H), 4.34 ppm (d, 1H), 3.69 ppm (m, 1H), 3.48 ppm (s, 3H), 2.44 ppm (s, 3H), 1.35 ppm (d, 6H), 1.21 ppm (d, 6H)的产率得到isopropyl-2-chloro-4-fluoro-5-[3,6-dihydro-3,4-dimethyl-5-isopropoxymethyl-2,6-dioxo-1(2H)-pyrimidinyl]-benzoate