t-butyl 3-cyclopropyl-2-(2-fluoro-4-methylsulphonylbenzoyl)-3-oxopropionate 在
水 、
magnesium sulfate 作用下,
以
甲苯 为溶剂,
反应 4.0h,
以to give 3-cyclopropyl-1-(2-fluoro-4-methylsulphonylphenyl)-propan-1,3-dione (7.4 g) as a red gum, NMR (CDCl3); 0.9-1.3 (m,4H), 1.8-2.1 (m, 1H), 3.1 (s,3H), 6.3 (s, 1H), 7.5-8.0 (m,3H)的产率得到3-cyclopropyl-1-(2-fluoro-4-methylsulphonylphenyl)-propan-1,3-dione